LP5560 [TI]
具有简单的单线控制和小的解决方案尺寸的可编程单 LED 驱动器;
| 型号： | LP5560 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 具有简单的单线控制和小的解决方案尺寸的可编程单 LED 驱动器 驱动 驱动器 |
| 文件： | 总29页 (文件大小：4852K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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LP5560
ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
LP5560 具有单线制接口的可编程 LED 驱动器
1 特性
3 说明
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宽输入电压范围：2.7V 至 5.5V
LP5560 是一款可编程的 LED 驱动器，能够生成各种
闪烁序列，每个序列最多由 3 个不同长度的脉冲组
成。可以通过单线制接口对闪烁序列进行编程。可编程
参数包括导通和关断时间，以及上升和下降时间。
LP5560 内置默认序列，能够应用于无编程功能的简易
系统中。
可调节输出电流：2.8mA 至 19.5mA
具有电流上升及下降时间控制的可编程闪烁序列
用于无编程功能的简易系统的默认闪烁序列
单线制接口
恒流高侧输出驱动器
极低的余量电压（典型值为 40mV）
超小解决方案尺寸 - 无外部组件
该器件具有超低余量电压，无需使用升压放大器。指示
灯 LED 可以由电池直接驱动。该器件采用小型封装，
并且无需任何外部组件，最大限度地减小了解决方案的
尺寸。
2 应用
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手机及其他便携式设备的 LED 指示灯
LP5560 采用间距为 0.4mm 的 TI 微型 4 引脚 DSBGA
封装。
读卡器
加油机
计步器
器件信息(1)
电子门禁控制
需要简单反馈的设备
器件型号
LP5560
封装
封装尺寸（标称值）
DSBGA (4)
0.886mm x 0.886mm
(1) 要了解所有可用封装，请见数据表末尾的可订购产品附录。
典型应用
VDD
LED
+
-
LP5560
CTRL
GND
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
English Data Sheet: SNVS873
LP5560
ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
www.ti.com.cn
目录
7.5 Programming .......................................................... 18
7.6 Registers................................................................. 18
Application and Implementation ........................ 19
8.1 Application Information............................................ 19
8.2 Typical Application ................................................. 19
Power Supply Recommendations...................... 22
1
2
3
4
5
6
特性.......................................................................... 1
应用.......................................................................... 1
说明.......................................................................... 1
修订历史记录 ........................................................... 2
Pin Configuration and Functions......................... 3
Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information.................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Single-Wire Interface Timing Requirements ............. 6
6.7 Typical Characteristics.............................................. 7
Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 17
8
9
10 Layout................................................................... 22
10.1 Layout Guidelines ................................................. 22
10.2 Layout Example .................................................... 22
11 器件和文档支持 ..................................................... 23
11.1 文档支持................................................................ 23
11.2 接收文档更新通知 ................................................. 23
11.3 社区资源................................................................ 23
11.4 商标....................................................................... 23
11.5 静电放电警告......................................................... 23
11.6 Glossary................................................................ 23
12 机械、封装和可订购信息....................................... 23
7
4 修订历史记录
注：之前版本的页码可能与当前版本有所不同。
Changes from Revision C (May 2013) to Revision D
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已添加 其他应用，器件信息和引脚配置和功能部分，ESD 额定值和热性能信息表，特性 描述，器件功能模式，应用
和实施，电源相关建议，布局，器件和文档支持以及机械、封装和可订购信息部分 .............................................................. 1
Changed RθJA value from "120°C/W" to "184.3°C/W"; added additional thermal values ....................................................... 5
Changes from Revision B (April 2013) to Revision C
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Changed layout of National Data Sheet to TI format ........................................................................................................... 18
2
Copyright © 2012–2016, Texas Instruments Incorporated
LP5560
www.ti.com.cn
ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
5 Pin Configuration and Functions
YFQ Package
4-Pin DSBGA
Top View
A
B
VDD
LED
GND
1
CTRL
2
Pin Functions
PIN
TYPE(1)
DESCRIPTION
NO.
A1
A2
B1
B2
NAME
VDD
P
A
Power supply pin
Current source output
Ground
LED
GND
CTRL
G
DI
Single-wire interface input
(1) A: Analog Pin D: Digital Pin G: Ground Pin P: Power Pin I: Input Pin
Copyright © 2012–2016, Texas Instruments Incorporated
3
LP5560
ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
www.ti.com.cn
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)(1)(2)(3)
MIN
MAX
UNIT
Voltage on VDD pin
−0.3
6
V
VDD + 0.3 V with
6 V maximum
Voltage on other pins (CTRL,LED)(4)
−0.3
V
Continuous power dissipation(5)
Junction temperature, TJ-MAX
Storage temperature, Tstg
Internally Limited
125
150
°C
°C
−65
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltages are with respect to the potential at the GND pins.
(3) If Military/Aerospace specified devices are required, contact the Texas Instruments Sales Office/ Distributors for availability and
specifications. Voltage
(4) Undervoltage lockout (UVLO) shuts down the LED driver with VIN drops to 2.3 V (typical). Power-on reset (POR) trips at VIN = 2 V
(typical).
(5) Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at TJ = 160°C (typical) and
disengages at TJ=140°C (typical).
6.2 ESD Ratings
VALUE
±2000
±1000
UNIT
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)
Charged-device model (CDM), per JEDEC specification JESD22-C101(2)
Electrostatic
discharge
V(ESD)
V
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)(1)(2)
MIN
2.7
NOM
MAX
5.5
UNIT
V
Voltage on power pin (VDD)
Junction temperature, TJ
−30
−30
125
85
°C
(1)
Ambient temperature, TA
°C
(1) In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may
have to be derated. Maximum ambient temperature (TA-MAX) is dependent on the maximum operating junction temperature (TJ-MAX-OP
=
125°C), the maximum power dissipation of the device in the application (PD-MAX), and the junction-to ambient thermal resistance of the
part/package in the application (RθJA), as given by the following equation: TA-MAX = TJ-MAX-OP – (RθJA × PD-MAX).
(2) All voltages are with respect to the potential at the GND pin.
4
Copyright © 2012–2016, Texas Instruments Incorporated
LP5560
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ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
6.4 Thermal Information
LP5560
THERMAL METRIC(1)
YFQ (DSBGA)
4 PINS
184.3
UNIT
RθJA
RθJC(top)
RθJB
ψJT
Junction-to-ambient thermal resistance
°C/W
°C/W
°C/W
°C/W
°C/W
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
1.8
103.2
Junction-to-top characterization parameter
Junction-to-board characterization parameter
9.1
ψJB
103.1
(1) For more information about traditional and new thermal metrics, see Semiconductor and IC Package Thermal Metrics.
6.5 Electrical Characteristics
Unless otherwise specified: VIN = 3.6 V, CTRL = 3.6 V, VLED = 3.1 V; typical limits are for TA = 25°C, and minimum and
maximum limits apply over the operating ambient temperature range (−30°C < TA < +85°C).(1)(2)
PARAMETER
TEST CONDITIONS
CTRL = 0 V
MIN
TYP
0.4
MAX
0.75
30
UNIT
ISD
IQ
Shutdown supply current
Quiescent supply current
µA
ILED = 0 mA
25
ISET = 0
2.26
4.61
2.8
3.34
5.99
8.82
11.53
14.24
16.5
19.55
22.04
ISET = 1 (default)
ISET = 2
5.3
6.78
7.8
ISET = 3
8.87
10.2
12.6
15.0
17.3
19.5
ILED
LED output current
mA
ISET = 4
10.96
13.5
ISET = 5
ISET = 6
15.05
16.96
ISET = 7
2.7 V ≤ VIN ≤ 4.5 V
IDX = 5.3 mA, Vƒ = 2.5 V
1.7 V ≤ VLED ≤ 3.4 V, ILED = 5.3 mA
ILED = 5.3 mA
ILED = 19.5 mA
VIN = 2.7 V to 5.5 V
VIN = 2.7 V to 5.5 V
CTRL = 1.8 V
ΔILED%/ΔVIN
ΔILED%/ΔVLED
VHR
Line regulation
–3%
3%
%/1V
mV
(3)
Load regulation
Headroom voltage(4)
0.6
40
40
100
VIH
Logic input high level
Logic input low level
CTRL pin leakage current
LED On time
1.1
V
VIL
0.6
400
V
ICTRL
nA
ms
ms
ms
ms
ms
T_cycle_H
T_cycle_L
Trise
13.2
26.4
0
3009.6
6019.2
1584
LED OFF time
Adjustable(5), TA = 25°C
LED current rise time(6)
LED current fall time(6)
Rise/fall time resolution
Tfall
0
1584
Fade resolution
See(5)
105.6
(1) All voltages are with respect to the potential at the GND pins.
(2) Minimum and Maximum limits are specified by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the
most likely norm.
(3) ILED = LED output current, VLED = LED forward voltage.
(4) For LED output pin, headroom voltage is defined as the voltage across the internal current source when the LED current has dropped
10% from the value measured at VIN – 0.5 V. If headroom voltage requirement is not met, LED current regulation is compromised.
(5) Specified by design.
(6) LED current ramp-up and ramp-down uses a combined PWM-current adjustment.
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6.6 Single-Wire Interface Timing Requirements
See (1)(2) and Figure 1
MIN
15
MAX
UNIT
µs
TC_ON
Command pulse on time
TC_OFF
Command pulse off time
30
µs
TT_ON
Minimum training pulse on time(3)
Minimum training pulse off time(4)
Calibration pulse length
200
200
0.35
500
µs
TT_OFF
µs
TCAL
8
ms
µs
T ENTER
T ENTER+T BLANK
Command entering period
Command entering period + Blank period
1500
µs
(1) Specified by design.
(2) Minimum and Maximum limits are specified by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the
most likely norm.
(3) All CTRL signal high times between calibration pulse and training end are considered as training pulse on times.
(4) All CTRL signal low times between calibration pulse and training end are considered as training pulse off times.
T
C_ON
T
T
CAL
T_OFF
CTRL
C
I
R1
T
T
T_ON
C_OFF
T
ENTER
T
BLANK
T
ENTER
Figure 1. Interface Timing
6
Copyright © 2012–2016, Texas Instruments Incorporated
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ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
6.7 Typical Characteristics
TJ = 25°C. Unless otherwise noted, typical characteristics apply to the Functional Block Diagram with: VIN = 3.6 V, RISET
=
24 kΩ, CIN = 100 nF.
1.0
50
45
40
35
30
25
20
15
10
5
0.8
0.6
-30°C
+25°C
+85°C
+85°C
+25°C
0.4
0.2
0.0
-30°C
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
Figure 2. Standby Current vs VIN
Figure 3. Quiescent Current vs VIN
6.6
23
6.3
6.0
5.7
5.4
5.1
4.8
4.5
4.2
3.9
3.6
22
21
20
19
18
17
16
15
+85°C
+85°C
-30°C
-30°C
+25°C
+25°C
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
5 mA
20 mA
Figure 4. LED Current vs Input Voltage
Figure 5. LED Current vs Input Voltage
25.0
7
22.5
20.0
17.5
15.0
12.5
10.0
7.5
6
5
4
3
2
1
0
5.0
2.5
0.0
0.0
0.1
0.2
0.3
0.4
0.5
0.0
20 mA
Figure 7. IOUT vs Headroom Voltage
0.1
0.2
0.3
0.4
0.5
HEADROOM VOLTAGE (V)
HEADROOM VOLTAGE (V)
5 mA
Figure 6. IOUT vs Headroom Voltage
Copyright © 2012–2016, Texas Instruments Incorporated
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LP5560
ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
www.ti.com.cn
7 Detailed Description
7.1 Overview
The LP5560 is a programmable LED driver with a single-wire interface. It is designed to drive a single indicator
LED with different blinking sequences. Up to three pulses with different on and off times can be programmed into
the device. LED current rise and fall times can also be independently controlled. Blinking sequence is stored into
volatile memory, thus removing input voltage VIN resets the memory into default state.
The high-side LED driver has very low headroom voltage requirement and can drive most indicator LEDs directly
from battery voltage. A single CTRL pin is used to control the device on and off and to change settings of the
device. A default blinking sequence is programmed into the LP5560 to enable use of the devices in simply
applications without programming capabilities.
7.2 Functional Block Diagram
VDD
POR
UVLO
State Machine
LED CONTROL
LED
Single-Wire
Interface
Volatile
Program Memory
CTRL
OSCILLATOR
IBIAS
TSD
Default Sequence
BANDGAP
GND
Copyright © 2016, Texas Instruments Incorporated
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Copyright © 2012–2016, Texas Instruments Incorporated
LP5560
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ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
7.3 Feature Description
7.3.1 LED Driver Headroom Voltage
The current source is connected internally between the VDD and LED output pins. The voltage across the
current source, (VVDD − VLED), is referred as headroom voltage (VHR). The current source requires a sufficient
amount of headroom voltage to be present across it in order to regulate the output current properly. The LP5560
headroom voltage requirement is 40 mV (typical) and does not depend on the current setting.
7.3.2 Single-Wire Interface
The LP5560 has one digital control input (CTRL). Threshold levels of CTRL input are fixed to support control
from low-voltage controller. The CTRL signal is used to control the mode of the circuit. The rising edge of the
CTRL signal activates the circuit and starts a command entering period. During the command entering period all
rising edges are counted. After command entering period there is a blank period when no rising edges are
allowed. If there are any rising edges during blank period these are not detected. User must take care not to start
the training sequence before blank period has elapsed or the training sequence is corrupted.
If CTRL is left high after command entering period, the consequent command is performed right after the blank
period. In case of run once command CTRL pin can be set low after the command entering period and execution
of the command starts once CTRL pin is pulled high after blank period.
CTRL
LED
Command
entering
period
Command
execution
starts
Blank
period
Figure 8. Single-Wire Interface
The LP5560 has four different commands. Command depends on the number of rising edges during command
entering period. If there are more than 4 rising edges during command entering period command is ignored. Note
that even in this case blank period needs to elapse before next command can be given.
Table 1. LP5560 Commands
COMMAND
NUMBER OF RISING EDGES DURING COMMAND
ENTERING PERIOD
Run
1
2
3
4
Training start
Training end
Run once
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7.3.2.1 Run Command
One rising edge of the CTRL signal within command entering period is interpreted as a run command. The CTRL
pin must be kept high during blank period. If the CTRL pin is pulled low during command entering period or blank
period device goes to stand by. In run mode (mode bit = 1) blinking sequence is started right after Blank period
and it is repeated as long as CTRL signal is kept high. When the CTRL signal is set low device goes into standby
mode (Figure 9).
CTRL
To Standby
LED
Command
entering
period
Blank
period
Programmed
sequence
Figure 9. Run Mode
In follow mode (mode bit = 0) LED is turned on right after a blank period, and it stays on as long as CTRL is kept
high. When CTRL signal is set low LED is turned off and device goes into standby mode (Figure 10).
CTRL
To Standby
LED
Command
Blank
entering
period
period
Figure 10. Follow Mode
7.3.2.2 Training Start Command
Two rising edges of CTRL signal within command entering period is interpreted as training start command.
Training start command starts training sequence. Different blinking sequences can be trained into device in
training mode. Training mode is described in more details in Training Mode.
7.3.2.3 Training End Command
Three rising edges of CTRL signal within command entering period is interpreted as training end command.
Training end is used to stop the training sequence.
7.3.2.4 Run-Once Command
Four rising edges of the CTRL signal within command entering period is interpreted as a run-once command.
Programmed blinking sequence is performed once after a run-once command. If CTRL is kept high after
command entering period the programmed blinking sequence starts right after the blank period has elapsed
(Figure 11). The CTRL signal must stay high as long as programmed blinking sequence is executed. If CTRL is
set low during execution of blinking sequence, device goes to standby and execution of blinking sequence is
stopped.
10
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CTRL
LED
To Standby
Programmed
sequence
Command
entering
period
Blank
period
Figure 11. Run-Once Command
If CTRL signal is low after command entering period, blinking sequence is executed once the CTRL is set high
(Figure 12).
CTRL
To Standby
Programmed
LED
sequence
Command
entering
period
Blank
period
Figure 12. Delayed Run-Once Command
If device is in follow mode (mode bit is 0) the run-once command turns the LED on, and it is kept on as long as
CTRL is held high.
7.3.3 Training Mode
Figure 17 shows an example of a full training sequence with three pulses. Training mode starts with a training
start command. Training start command is followed by blank time during which no rising edges are allowed.
Blank time is followed by calibration pulse. Calibration pulse length (TCAL) defines the speed of the training
sequence and can vary from 350 µs to 8 ms. During parameter settings register values are incremented at speed
defined by TCAL. For example, if calibration pulse length is 1 ms and current setting pulse length is 3.3 ms, the
current-setting value is 3 (current-set register is incremented 3 times). If the parameter-setting pulse is shorter
than the calibration pulse, then the corresponding parameter is set to 0.
The next rising edge after calibration pulse starts LED driver current setting (I). LED driver current is recorded
once CTRL is pulled low. Note that there are empty low times before and after current setting pulse. For the
following pulses both CTRL high and CTRL low times are used to set the parameters. Next the CTRL high time
defines the LED current rise time setting for pulse 1 (R1). When R1 setting is started mode bit is set to 0. This
sets the LP5560 device into follow mode. Mode bit is set to 1 after first off time has been saved into register. This
means that at least one full pulse must be trained into memory to set the device into run mode.
CTRL low time after R1 defines the LED on time for pulse 1 (ON1). CTRL high time after ON1 sets the LED
current fall time (F1). CTRL low time after F1 sets pulse 1 off time (OFF1). Once rising edge of CTRL is detected
after first off time setting mode bit is set to 1 (run mode) and the number of pulses register (NOP[1:0]) is set to 1.
This indicates that one full pulse has been trained into memory.
Rise, on, fall, and off times for pulse 2 and 3 are set the same way as for pulse 1. Note that NOP register is
always incremented after OFFx time setting. This means that all pulse parameters (rise, on, fall, and off times)
must be trained for each pulse make it valid. The training sequence is ended with training end command.
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7.3.3.1 Ending the Training Sequence
A training end command can be given at any time of the training sequence except during blank time. Outcome of
the training sequence depends on the place of the training end command. If a training end command is given
after any of the off-time setting (OFF1, OFF2 or OFF3), mode bit is set to 1, and the corresponding number of
pulses are stored into memory. If a training end command is given after any of the other pulse parameters (Rx,
ONx or Fx) that pulse is ignored. For example, if training end command is given after ON2 pulse 2 is ignored and
blinking sequence includes only pulse 1.
7.3.3.2 Reset to Default
If a training end command is given right after a training start command, the LP5560 is reset back to factory
defaults (Figure 13). In this case the mode bit is set to 1 (run mode) with the factory-set default blinking
sequence.
Training
end
command
Training start
command
Blank period
CTRL
Figure 13. Reset to Default
7.3.3.3 Changing the LED Current
The LP5560 devices allows changing the LED output current without the need to reprogram the previously
programmed blinking sequence. This is done by giving the training end command after current setting
(Figure 14). In this case only the current setting changes. If a blinking sequence was programmed into the
LP5560 device it remains unchanged. If mode bit was 0 (follow mode) before the training sequence it remains 0.
Training
start
command
Training
end
command
Blank
Period
CTRL
C
I
Figure 14. Current Programming Sequence
7.3.3.4 Entering Follow Mode
Mode bit can be set to 0 (follow mode) in two ways. If training end command is given after calibration pulse mode
bit is set to 0 (follow mode) and the previously set LED output current setting remains unchanged (Figure 15).
Training
start
command
Training
end
command
Blank
Period
CTRL
C
Figure 15. Entering Follow Mode
If training end command is given after R1, ON1 or F1 mode bit is set to 0 (follow mode) and new current setting
is stored to current register (Figure 16). If a training end command is given after F1 CTRL low time before
training end command needs to be less than minimum training pulse off time (200 µs). Otherwise off time OFF1
is set to minimum value, and pulse 1 is stored into memory.
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Training
start
command
Training
end
command
Blank
period
CTRL
C
I
R1
Figure 16. Entering Follow Mode With New Current Setting
7.3.3.5 Timeout
If during training CTRL stays constant for more than 127 × TCAL time this is interpreted as timeout. For example,
if calibration pulse length TCAL is 1 ms, timeout time is 127 ms. Timeout ends the training sequence. Timeout is
considered as a false training, and it is a good practice to always give a complete training sequence after timeout
to ensure correct data is stored into memory.
Training
start
command
Training
end
command
Blank
period
R1
R2
CTRL
C
I
ON1 F1 OFF1
ON2 F2 OFF2 R3 ON3
F3
OFF3
Figure 17. Full Training Sequence
7.3.4 LED Output Current Setting
The LED output current can be set from 2.8 mA to 19.5 mA in 7 steps. Duration of the current setting pulse (I)
defines the current setting.
Table 2. LED Current Setting
CURRENT SETTING
LED CURRENT (mA)
0
1
2
3
4
5
6
7
2.8
5.3 default
7.8
10.2
12.6
15.0
17.3
19.5
Copyright © 2012–2016, Texas Instruments Incorporated
13
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7.3.5 Rise and Fall Time Settings
Rise and fall times of each pulse can be programmed independently. Rise and fall time can be set from 0 to
1584 ms with 105.6 ms steps. Rise and fall times are generated using a combined PWM and current control.
Ramp has 32 PWM steps. For the first 8 steps LED current is decreased to 12.5%. For the remaining steps
current is set to 100%. Each step is 3.3 ms long. This results in the minimum ramp time of 3.3 ms × 32 = 105.6
ms. When ramp time is increased each PWM step is done multiple times. When setting rise and fall times they
are always rounded down. For example if calibration pulse length is 1 ms and rise time setting pulse is 2.9 ms
rise time is set to 2 which is 211.2 ms. Rise and fall times can be set to zero by giving pulse that is shorter than
calibration pulse.
Table 3. Rise and Fall Time Settings
RAMP SETTING
RAMP TIME (ms)
0
0
1
105.6
2
211.2
3
316.8
4
422.4
5
528 default
633.6
6
7
739.2
8
844.8
9
950.4
10
11
12
13
14
15
1056
1161.6
1267.2
1372.8
1478.4
1584
14
Copyright © 2012–2016, Texas Instruments Incorporated
LP5560
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ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
7.3.6 LED ON-Time Setting
LED on time has 5-bit control. On time can be controlled from 13.2 ms to 3009.6 ms in 31 steps. Step size is not
constant to increase resolution on shorter ON times. With longer on times also the step size is increased. Table 4
shows the available on times.
Table 4. LED ON-Time Setting
SETTING
0
LED ON TIME (ms)
13.2
1
26.4
2
52.8
3
105.6
4
158.4
5
211.2
6
264
7
316.8
8
369.6
9
435.6
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
501.6 default
594
699.6
805.2
910.8
1016.4
1122
1227.6
1353
1478.4
1603.8
1729.2
1854.6
1980
2105.4
2230.8
2356.2
2481.6
2613.6
2745.6
2877.6
3009.6
Copyright © 2012–2016, Texas Instruments Incorporated
15
LP5560
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7.3.7 LED OFF-Time Setting
LED off time has also 5-bit control. Off time can be controlled from 26.4 ms to 6019.2 ms in 31 steps. Off time is
always twice as long as on time with same setting.
Table 5. LED OFF-Time Setting
SETTING
0
LED OFF TIME (ms)
26.4
1
52.8
2
105.6
3
211.2
4
316.8
5
422.4
6
528
7
633.6
8
739.2
9
871.2
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1003.2
1188
1399.2
1610.4 default
1821.6
2032.8
2244
2455.2
2706
2956.8
3207.6
3458.4
3709.2
3960
4210.8
4461.6
4712.4
4963.2
5227.2
5491.2
5755.2
6019.2
16
Copyright © 2012–2016, Texas Instruments Incorporated
LP5560
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7.4 Device Functional Modes
POWER-ON RESET When input voltage is applied to VDD pin device goes through power on reset (POR).
During POR defaults are set into control registers.
STANDBY: After POR device goes to standby. This is the low power mode when all the internal blocks are shut
down.
COMMAND ENTERING PERIOD + BLANK PERIOD: Rising edge of the CTRL signal activates the circuit and
starts a command entering period. During the command entering period all rising edges are
counted. After command entering period there is a blank period when no rising edges are allowed.
RUN:
If mode bit is 1 (run mode) and run command has been detected device goes into run mode. In run
mode LP5560 generates the programmed blinking sequence.
FOLLOW MODE: If mode bit is 0 (follow mode) and run command or run once command has been detected
LP5560 goes into follow mode. In follow mode LED stays on as long as CTRL pin is held high.
RUN-ONCE MODE: If run once command has been detected and mode bit is 1 (run mode) device goes into
run-once mode. In run-once mode LP5560 generates the programmed blinking sequence once.
CTRL must be high as long as blinking sequence is running.
TRAINING: If training start command has been detected device goes into training mode. In training mode a
new blinking sequence can be programmed into the device.
Power On Reset
Stand By
Rising edge at CTRL
Training end
or timeout
CTRL = LOW
Command
entering
period
CTRL = LOW
+
CTRL = LOW
Blank period
Training
Start
Command
Run
Command,
Mode = 1
Training Mode
Run Mode
Run Once
Command,
CTRL = low,
Run Command
or Run Once
Command,
Mode = 0
Run Once
Command,
CTRL = High,
Mode = 1
Follow Mode
Run Once Mode
CTRL = High
Mode = 0
CTRL = High
Mode = 1
Wait for CTRL
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7.5 Programming
7.5.1 Default Sequence
Default blinking sequence is programmed into the LP5560 to enable the use of a device in simple systems
without programming capabilities. Default sequence has a single pulse with parameters as follows:
I = 5.3 mA; R1 = 528 ms; ON1 = 501.6 ms; F1 = 528; OFF1 = 1610.4 ms
7.6 Registers
7.6.1 Control Registers
Control registers are shown only for a reference. There is no direct way to write or read these registers. Register
values are set in the training mode as described earlier in the document.
Table 6. Control Registers
7
6
5
4
3
2
1
0
F1[3:0]
F2[3:0]
R1[3:0]
R2[3:0]
R3[3:0]
F3[3:0]
MODE
NOP[1:0]
ON1[4:0]
OFF1[4:0]
ON2[4:0]
OFF2[4:0]
ON3[4:0]
OFF3[4:0]
I_LED[2:0]
n/a
n/a
n/a
n/a
18
Copyright © 2012–2016, Texas Instruments Incorporated
LP5560
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ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The LP5560 is a programmable LED driver designed to generate variety of blinking sequences for indicator
LEDs. It can drive single LED with up to 19.5 mA output current. Very low headroom voltage allows driving most
indicator LEDs straight from a single Li-ion battery. Default blinking sequence with one pulse is programmed into
the LP5560 to enable the use of device in simple systems without programming capabilities. Pulling CTRL signal
high starts the default blinking sequence. Different blinking sequences with up to three pulses can be
programmed into the LP5560 through a single-wire interface. Programmable parameters include on and off times
as well as rise and fall times.
8.2 Typical Application
A1
B2
A2
B1
ILED = 2.8 mA to 19.5 mA
VIN = 2.7 V to 5.5 V
VDD
LED
LP5560
GND
CTRL
CTRL
Copyright © 2016, Texas Instruments Incorporated
Figure 18. LP5560 Typical Application
8.2.1 Design Requirements
In this example LP5560 is used to drive a blue 0406-size indicator LED with a 5.3-mA output current. For this
example, use the parameters listed in Table 7.
Table 7. Design Parameters
DESIGN PARAMETER
LED Output Current
EXAMPLE VALUE
5.3 mA
Maximum LED forward voltage at 5 mA
VIN voltage
3.1 V
from 3.2 V to 5.5 V
8.2.2 Detailed Design Procedure
8.2.2.1 Step-by-Step Design Procedure
To design in the LP5560 use the following simple design steps:
•
•
•
Define the input voltage range of the system. For the LP5560 device the maximum input voltage must not
exceed 5.5 V. The minimum input voltage is critical parameter for LED selection.
Define the LED current. LED current affects the LED forward voltage and must be taken into account when
selecting the LED for the application.
Choose a LED which maximum forward voltage with desired LED current is less than minimum input voltage -
100 mV. This ensures that there is always enough headroom voltage available for the LED driver.
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8.2.2.2 Running the Default Blinking Sequence
To run the default blinking sequence apply input voltage to VDD pin. Allow the VDD voltage settle before pulling
the CTRL pin high. It is not recommended to connect the CTRL and VDD lines together. When CTRL line is
pulled high the LP5560 starts to generate the default blinking sequence. Figure 19 shows the LP5560 generating
default sequence. Rise and fall times are generated using a combined PWM and current control. Ramp has 32
PWM steps. For the first 8 steps LED current is decreased to 12.5%. For the remaining steps current is set to
100%. Each step is 3.3 ms long. This result’s the minimum ramp time of 3.3 ms × 32 = 105.6 ms. Figure 22
shows LED current with minimum rise time. When ramp time is increased each PWM step is done multiple times.
In the default sequence rise and fall times are set to 528 ms.
8.2.2.3 Programming New Blinking Sequence to the Memory
Figure 22 shows an example of a training sequence which programs a new blinking sequence into the LP5560
memory. This example has a single pulse with 105.6 ms rise time, 105.6 ms on time, 105.6 ms fall time and
211.2 ms off time. LED current is set to 5.3 mA. Training sequence is started by giving a training start command
(two rising edges within 500 µs). First pulse after a training start command is the calibration pulse which
determines the speed of the training sequence. Note that there must always be at least 1500 µs from the first
rising edge of the training start command before calibration pulse can be given. Second pulse after the
calibration pulse is the LED current setting. Note that there are empty low times before and after current setting
pulse. For the following pulses both CTRL high and CTRL low times are used to set the parameters. Next CTRL
high time defines LED current rise time setting for pulse 1 (R1). CTRL low time after R1 defines the LED on time
for pulse 1 (ON1). CTRL high time after ON1 sets the LED current fall time (F1). CTRL low time after F1 sets
pulse 1 off time (OFF1). The training sequence is finished with a training stop command (three rising edges
within 500 µs). Figure 23 show the LED current after programming the new pulse into the LP5560 memory.
Figure 24 and Figure 25 show another example of a training sequence with three pulses and the resulting
blinking sequence. In this example all three pulses have different rise, on, fall, and off times. LED current is set to
10.2 mA. Figure 26 show how this sequence is run only once using the run-once command. Even though the
CTRL is held high for a long time the blinking sequence is only executed one time because a run-once command
(four rising edges within 500 µs) is given at the beginning of the frame.
8.2.3 Application Curves
Figure 19. Default Blinking Sequence
Figure 20. LED Rise Time Set to 105.6 ms
20
Copyright © 2012–2016, Texas Instruments Incorporated
LP5560
www.ti.com.cn
ZHCSF90D –AUGUST 2012–REVISED JUNE 2016
Figure 21. LED Rise Time Set to 0 ms
Figure 22. Example Training Sequence with One Pulse
Figure 23. Example Blinking Sequence with One Pulse
Figure 24. Example Training Sequence with Three Pulses
Figure 25. Example Blinking Sequence with Three Pulses
Figure 26. Run-Once Command
Copyright © 2012–2016, Texas Instruments Incorporated
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LP5560
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9 Power Supply Recommendations
The LP5560 is designed to operate from an input voltage supply range between 2.7 V and 5.5 V. This input
supply must be well regulated. If the input voltage has high noise content TI recommends adding a dedicated
ceramic bypass capacitor close to the VDD and GND pins. Depending on the selected LED it may be necessary
to increase the minimum input voltage. The minimum input voltage must always be 100 mV higher than the LED
maximum forward voltage.
10 Layout
10.1 Layout Guidelines
•
Normally the LP5560 device does not require any external components except for the LED. However, in a
noisy environment a small 0.1-µF bypass capacitor can be connected between VIN and GND pins.
•
•
TI recommends routing the pins in a 45-degree angle to avoid component rotation during soldering process.
Use traces with similar width for all pins. This makes the exposed copper area similar for all pins and
improves the soldering reliability.
•
Obtain the minimum clearance and trace width from the manufacturer of the PCB used for the board.
10.2 Layout Example
ëL! to ë55
ëL! to Db5
LED
VDD
GND
0.1 ꢀF
Optional
bypass capacitor
CTRL
To control
signal
VIA to
GND
Figure 27. LP5560 Layout Example
22
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11 器件和文档支持
11.1 文档支持
11.1.1 相关文档ꢀ
更多信息，请参见以下文档：
AN-1112 DSBGA 晶圆级芯片级封装
11.2 接收文档更新通知
如需接收文档更新通知，请访问 www.ti.com.cn 网站上的器件产品文件夹。点击右上角的提醒我 (Alert me) 注册
后，即可每周定期收到已更改的产品信息。有关更改的详细信息，请查阅已修订文档中包含的修订历史记录。
11.3 社区资源
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
11.4 商标
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
11.5 静电放电警告
ESD 可能会损坏该集成电路。德州仪器 (TI) 建议通过适当的预防措施处理所有集成电路。如果不遵守正确的处理措施和安装程序 , 可
能会损坏集成电路。
ESD 的损坏小至导致微小的性能降级 , 大至整个器件故障。 精密的集成电路可能更容易受到损坏 , 这是因为非常细微的参数更改都可
能会导致器件与其发布的规格不相符。
11.6 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
12 机械、封装和可订购信息
以下页中包括机械、封装和可订购信息。这些信息是针对指定器件可提供的最新数据。这些数据会在无通知且不对
本文档进行修订的情况下发生改变。欲获得该数据表的浏览器版本，请查阅左侧的导航栏。
版权 © 2012–2016, Texas Instruments Incorporated
23
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status Package Type Package Pins Package
Eco Plan
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
Samples
Drawing
Qty
(1)
(2)
(3)
(4/5)
(6)
LP5560TME/NOPB
LP5560TMX/NOPB
ACTIVE
ACTIVE
DSBGA
DSBGA
YFQ
YFQ
4
4
250
RoHS & Green
SNAGCU
Level-1-260C-UNLIM
Level-1-260C-UNLIM
-30 to 85
-30 to 85
3000 RoHS & Green
SNAGCU
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
5-Nov-2022
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
K0
P1
W
B0
Reel
Diameter
Cavity
A0
A0 Dimension designed to accommodate the component width
B0 Dimension designed to accommodate the component length
K0 Dimension designed to accommodate the component thickness
Overall width of the carrier tape
W
P1 Pitch between successive cavity centers
Reel Width (W1)
QUADRANT ASSIGNMENTS FOR PIN 1 ORIENTATION IN TAPE
Sprocket Holes
Q1 Q2
Q3 Q4
Q1 Q2
Q3 Q4
User Direction of Feed
Pocket Quadrants
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
B0
K0
P1
W
Pin1
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant
(mm) W1 (mm)
LP5560TME/NOPB
LP5560TMX/NOPB
DSBGA
DSBGA
YFQ
YFQ
4
4
250
178.0
178.0
8.4
8.4
0.92
0.92
0.99
0.99
0.7
0.7
4.0
4.0
8.0
8.0
Q1
Q1
3000
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
5-Nov-2022
TAPE AND REEL BOX DIMENSIONS
Width (mm)
H
W
L
*All dimensions are nominal
Device
Package Type Package Drawing Pins
SPQ
Length (mm) Width (mm) Height (mm)
LP5560TME/NOPB
LP5560TMX/NOPB
DSBGA
DSBGA
YFQ
YFQ
4
4
250
208.0
208.0
191.0
191.0
35.0
35.0
3000
Pack Materials-Page 2
MECHANICAL DATA
YFQ0004xxx
D
0.600±0.075
E
TMD04XXX (Rev A)
D: Max = 0.916 mm, Min =0.856 mm
E: Max = 0.916 mm, Min =0.856 mm
4215073/A
12/12
A. All linear dimensions are in millimeters. Dimensioning and tolerancing per ASME Y14.5M-1994.
B. This drawing is subject to change without notice.
NOTES:
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