ACE701CA16.0VBNH [ACE]
Small Package PFM Control Step-Up DC/DC Converter;型号: | ACE701CA16.0VBNH |
厂家: | ACE TECHNOLOGY CO., LTD. |
描述: | Small Package PFM Control Step-Up DC/DC Converter |
文件: | 总13页 (文件大小:806K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Description
The ACE701CA Series is a CMOS PFM-control step-up switching DC/DC converter. The PFM
controller allows the duty ratio to be automatically switched according to the load (light load: 66%, high
output current: 78%), enabling products with a low ripple over a wide range, high efficiency, and high
output current. With the ACE701CA Series, a step-up switching DC/DC converter can be configured by
using an external coil, capacitor, and diode. The built-in MOSFET is turned off by a protection circuit when
the voltage at the LX pin exceeds the limit to prevent it from being damaged. This feature, along with the
mini package and low current consumption, makes the ACE701CA Series ideal for applications such as
the power supply unit of portable equipment.
Features
Low voltage operation: Startup at 0.9 V min. (IOUT = 1 mA) guaranteed
Duty ratio: 66/78%, built in auto switching type PFM controller
External parts: Coil, capacitor, diode
Output voltage: Settable to between 1.8V to 6.0 V in 0.1 V steps
Accuracy of ±2%
High efficiency:±85%(typ.)
Standard function (product typeA)
Shutdown function (product type C,D)
External transistor type available (product type B、D)
Application
Digital cameras
Electronic notebooks and PDAs
Portable CD/MD players
Cameras, video equipment
Communications equipment
Power supply for microcomputers
Absolute Maximum Ratings
Parameter
Symbol
VOUT
EN
Max
VSS-0.3 ~ VSS+8
VSS-0.3 ~ VSS+8
VSS-0.3 ~ VSS+8
1000
Unit
V
VOUT pin voltage
EN pin voltage
V
LX pin voltage
VLX
V
LX pin current
ILX
mA
mW
mW
SOT-23-3
250
SOT-23-5
SOT-89-3
TO-92
250
Power dissipation
PD
mW
mW
℃
500
500
Operating temperature
Topr
Tstg
-40 ~+85
-40 ~+125
260°C, 10s
Storage temperature
℃
Soldering Temperature & Time
Tsolder
VER 1.2
1
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Packaging Type
SOT-23-3
SOT-23-5
SOT-89-3
SOT-89-5
TO-92
Pin Configuration
SOT-23-3 SOT-23-5 SOT-89-3 SOT-89-5 TO-92 Description
Function
VOUT
VSS
1
2
2
4
2
1
2
5
2
1
Output voltage pin
GND pin
External inductor connection
pin
3
5
3
4
3
LX/EXT
Shutdown pin
1
3
3
1
EN
NC
“H”: Normal operation
“L”: Step-up stopped
No connection
Ordering information
ACE701CA X XX XX + H
Halogen - free
Pb - free
BM: SOT-23-3
BN: SOT-23-5
AM: SOT-89-3
AN: SOT-89-5
EP: TO-92
Output Voltage: 1.8V/1.9V/……/5.9V/6.0V
Function Description:
1: Internal Tr. Driver, Without Enable circuit
2: Internal Tr. Driver, With Enable circuit
3: External Tr. Driver, Without Enable circuit
4: External Tr. Driver, With Enable circuit
VER 1.2
2
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Block Diagram
VER 1.2
3
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Electrical Characteristics
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
VOUT(S
)×0.98
VOUT(S)
×1.02
Output voltage
VOUT
VOUT
V
Input voltage
VIN
6
V
V
Operation start voltage
VST1
IOUT= 1 mA
0.9
No external parts, voltage
applied to VOUT LX pulled up
to VOUT via 300Ω resistor
Oscillation start voltage
VST2
0.8
V
uA
V
OUT:3.0V
20
40
V
OUT=0.95
×VOUT
Current consumption 1
Current consumption 2
ISS1
V
OUT:5.0V
30
6
60
10
uA
uA
ISS2
ISSS
ISW
VOUT=VOUT+0.5 V
VEN = 0 V
Current consumption
during shutdown
1.0
mA
uA
uA
Switching current
VLX= 0.4 V
100
200
Switching transistor
leakage current
Line regulation
No external parts, VLX=VOUT
=8 V ,VEN = 0 V
ISWQ
1.0
∆VOUT1
∆VOUT2
VIN= 0.4×VOUT~0.6×VOUT
20
20
50
50
mV
mV
Load regulation
Maximum Oscillation
frequency
IOUT= 10 µA ~ 50mA
V
OUT= 0.95×VOUT, measure
fosc
100
Khz
waveform at LX pin
VOUT= 0.95×VOUT
,
Duty ratio 1
Duty1
measure waveform at
LX pin
70
78
85
%
Measure waveform at
LX pin with light load
Duty ratio 2
Efficiency
Duty2
EFFI
VSH
66
85
%
%
V
V
OUT=0.95×VOUT, judge
oscillation at LX pin
0.75
Shutdown pin input
voltage
VOUT= 0.95×VOUT
,
VSL1
0.3
V
judge stop at LX pin
VEN=6V
ISH
ISL
-0.1
-0.1
0.1
0.1
uA
uA
Shutdown pin input
current
VEN=0V
Remark:
VIN =VOUT(S)×0.6 applied, IOUT=VOUT(S) / 250 Ω
Shutdown function built-in type: EN pin is connected to VOUT
ST1 only is suitable for ACE701CAA/C
VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage.
V
VER 1.2
4
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Standard Circuits
Component: Inductor:47uH(Sumida)
Diode:IN5817、IN5819
Capacitor:47uF/16V(Tantalum)
NMOS:ACE7400
Transistor:2SD1628G、2SD3279
Base Resistor(Rb):1K Ω
1、 ACE701CA-1 Circuits:
2、ACE701CA-2 Circuits:
3、ACE701CA-3 Circuits:
4、ACE701CA-4 Circuits
VER 1.2
5
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Typical Performance Characteristics
1. ACE701CA-1
Vout:3V
Circuits
1
Vout:3.3V
2. ACE701CA-
Circuits
VER 1.2
6
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
3. ACE701CA 1
-
Vout:5V
Circuits
Vout:3.6V
4. ACE701CA-3
Circuits
5. ACE701CA
-3
Vout:5V
Circuits
VER 1.2
7
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Packing Information
SOT-23-3
VER 1.2
8
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Packing Information
SOT-23-5
VER 1.2
9
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Packing Information
SOT-89-3
VER 1.2 10
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Packing Information
SOT-89-5
VER 1.2 11
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Packing Information
TO-92
VER 1.2 12
ACE701CA
Small Package PFM Control Step-Up DC/DC Converter
Notes
ACE does not assume any responsibility for use as critical components in life support devices or systems
without the express written approval of the president and general counsel of ACE Electronics Co., LTD.
As sued herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and shoes failure to perform when properly used in
accordance with instructions for use provided in the labeling, can be reasonably expected to result in
a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can
be reasonably expected to cause the failure of the life support device or system, or to affect its safety
or effectiveness.
ACE Technology Co., LTD.
http://www.ace-ele.com/
VER 1.2 13
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