概述
规格参数
数据手册YB1220ST26RBB 概述
Dual Channel 200mA LDO Regulator 双通道200毫安LDO稳压器 线性稳压器IC
YB1220ST26RBB 规格参数
| 生命周期： | Contact Manufacturer | Reach Compliance Code： | unknown |
| 风险等级： | 5.67 | Is Samacsys： | N |
| 调节器类型： | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | Base Number Matches： | 1 |
YB1220ST26RBB 数据手册
通过下载YB1220ST26RBB数据手册来全面了解它。这个PDF文档包含了所有必要的细节，如产品概述、功能特性、引脚定义、引脚排列图等信息。
PDF下载YB1220
Dual Channel 200mA LDO Regulator
Description
Features
• High Accuracy Output Voltage : + 2%
• Wide Output Voltage Range : 1.2~3.6V
• Each Channel Typical Current : 200mA
• Max. Allowable 300mA Each Channel
• Low Quiescent Current : ~80uA
• Dual Enable Pins Control
• 300mV Dropout at 200mA 3.3V Output
• Stable with 1.0uF Ceramic Capacitor
• Thermal Protection Shutdown
The YB1220 family is a dual-channel LDO product
consisting of 2 independent low noise, low dropout
(LDO), linear regulators especially designed for
battery-powered equipment and portable device.
The regulator achieves a low 300 mV dropout at
200mA 3.3V output and good PSRR of near 50dB
at 1K~10KHz frequency.
The YB1220 consumes only 80uA supply current
with both regulators enabled and supports different
output voltages of full range from 1.2 to 3.6V
(pre-set).
• Output Short-Circuit Current Limit
• Built-In Internal Soft-Start
• Green Package (RoHS) Available
The YB1220 is smartly designed to fit in three
different pin allocations of SOT23-6 package which
offers higher flexibility to users’ PCB layout.
Applications
• Cellular Phone
• White LED Backlighting
• PDA, Notebook, PC
• Digital Camera
• Portable Application
• Wireless LAN
Other features of YB1220 include a thermal
shutdown circuit and an output short-circuit
protection.
• Battery-Powered Equipment
Typical Application Circuitry
YB1220 MRev.1.1
www.yobon.com.tw
1
YB1220
Dual Channel 200mA LDO Regulator
Pin Configuration
Pin Description
Table 1
Pin Name
SOT-26M Description
Pin Name
SOT-26R Description
Regulated Output Voltage 1
Ground Pin
Pull High to Enable Output VO1
Ground Pin
1
2
3
4
5
6
EN1
GND
EN2
VO2
VIN
1
2
3
4
5
6
VO1
GND
EN1
EN2
VIN
Pull High to Enable Output VO2
Regulated Output Voltage 2
Unregulated Input Supply
Regulated Output Voltage 1
Pull High to Enable Output VO1
Pull High to Enable Output VO2
Unregulated Input Supply
Regulated Output Voltage 2
VO1
VO2
Pin Name
SOT-26T Description
Pull High to Enable Output VO1
Unregulated Input Supply
Pull High to Enable Output VO2
Regulated Output Voltage 2
Ground Pin
1
2
3
4
5
6
EN1
VIN
EN2
VO2
GND
VO1
Regulated Output Voltage 1
YB1220 MRev.1.1
www.yobon.com.tw
2
YB1220
Dual Channel 200mA LDO Regulator
Ordering Information
Marking Information
Absolute Maximum Ratings
Recommended Operating Conditions
Supply Voltage ................................................ -0.3V to 7.0V
Output Voltage ....................................... -0.3V to (VIN+0.3V)
Output Short-Circuit Duration.....................................Infinite
Junction Temperature Range ...................................+150℃
Storage Temperature Range..................... -65℃ to +150℃
Lead Temperature....................................................+250℃
Input Supply Voltage........................ 2V to 6.0V
Operating Temperature..............-40℃ to +85℃
ESD Susceptibility (HBM)...........................................2KV
ESD Susceptibility (MM)........................................... 200V
Thermal Resistance (SOT-26, θJC) ....................140℃/W
Thermal Resistance (SOT-26, θJA) ....................250℃/W
Internal Power Dissipation (SOT-26, PD).................. 0.4W
YB1220 MRev.1.1
www.yobon.com.tw
3
YB1220
Dual Channel 200mA LDO Regulator
Electrical Characteristics
TA = 25℃, V = Max(VO1,VO2) + 1 V , CIN = COU T = Cout2=1.0μF, EN = VIN, unless otherwise noted
IN
1
Table 2
Function Parameter
Conditions
Min
Typ
Max
Units
Input Voltage Range
Output Voltage
2.0
1.2
-2.0
0
6.0
3.6
V
V
Predefined
IOUT = 10mA, VO >= 1.3V
IOUT = 10mA, VO = 1.2V
Short-Circuit Output Limit
+2.0
+4.0
%
Output Voltage Accuracy
Output Current Limit
%
80
mA
VOUT = 3.3V, IOUT = 200mA
VOUT = 2.8V, IOUT = 200mA
VOUT = 2.5V, IOUT = 200mA
VOUT = 1.8V, IOUT = 200mA
VOUT = 1.2V, IOUT = 200mA
Iout = 0mA
300
380
420
550
800
80
Dropout Voltage (Note 1)
mV
Ground Current
Line Regulation
μA
VIN = Max(VO1,VO2)+1V to 6V,
Iout =10mA
0.4
%/V
Load Regulation
Iout = 1mA to 200mA
EN1 = EN2 = 0V
1.0
~0.01
62
%
μA
dB
dB
dB
V
Shutdown Supply Current
F = 1KHz, Iout = 1mA
F = 10KHz, Iout = 1mA
F = 100KHz, Iout = 1mA
VIN = 2.0V to 6V
Ripple Rejection (PSRR)
50
34
EN Logic Low Level
EN Logic High Level
EN Input Bias Current
Thermal Shutdown
Thermal Hysteresis
0.4
VIN = 2.0V to 6V
1.5
V
VIN = EN = 6V
0.01
160
20
μA
℃
℃
Shutdown Temperature
Note 1 : The drop out voltage varies depending on output voltage selection
Dropout is defined as VIN–VO when VO is 100mV below VO where VIN=Max(VO1,VO2) for nominal VO.
Note 2: Time needed for VOUT to reach 90% of final value.
YB1220 MRev.1.1
www.yobon.com.tw
4
YB1220
Dual Channel 200mA LDO Regulator
Typical Characteristics
At TA=25℃, VIN=Max(VO1,VO2) +1V, CIN=COUT=1.0μF, EN=VIN, unless otherwise noted.
YB1220 MRev.1.1
www.yobon.com.tw
5
YB1220
Dual Channel 200mA LDO Regulator
ILoad=80mA
YB1220 MRev.1.1
www.yobon.com.tw
6
YB1220
Dual Channel 200mA LDO Regulator
Functional Block Diagram
Functional Description
The YB1220 consists of two low-noise,
low-quiescent current, low-dropout linear
regulators and is supplied in a small
SOT-26 package suitable for portable and
difference. If the feedback voltage is lower
than the reference voltage, the gate of
pass-transistor is pulled low, allowing more
current to pass to the output and increasing
the output voltage. If the feedback voltage
is too high, the gate of pass transistor is
pulled high, resulting in less current to the
output.
battery-powered
applications.
Each
channel can independently supply loads up
to 200mA (typical operation, not maximum)
and output voltages are preset and ranging
from 1.2V to 3.6V.
Stability
As shown in the Functional Block Diagram,
the YB1220 consists of a single reference
generating circuit, two error amplifiers, two
P-channel pass transistors, independent
internal feedback voltage dividers, two
short circuit current limiters and one
thermal shutdown protection circuit.
The YB1220 is a high performance LDO
emphasizing stability with low output
capacitance. It is able to maintain stability
with an output capacitor as low as 1.0uF.
The output capacitor can also be increased
to optimize performance. The YB1220 will
remain stable and in regulation with no load,
unlike many other voltage regulators.
The internal reference is connected to the
error amplifier’s inverting input. The error
amplifier compares this reference with the
feedback voltage and amplifies the
Internal P-Channel Pass Transistor
The YB1220 features a low impedance
YB1220 MRev.1.1
www.yobon.com.tw
7
YB1220
Dual Channel 200mA LDO Regulator
P-channel MOSFET pass transistor. This
provides several advantages over similar
designs using a PNP pass transistor,
including low operating power and longer
battery life. The YB1220 consumes only
90µA around of quiescent current under
most conditions.
junction temperature drops to +140°C.
Soft-Start Circuitry
The YB1220 includes a soft-start circuitry to
limit inrush current at turn-on. During power
up, the output capacitor and output load are
charged with a reduced output current.
Shortly after the initial power up, the
soft-start feature is terminated and normal
operation is resumed.
Output Short-Circuit Current Limit
The YB1220 includes two current limiters,
which monitor and control the pass
transistor’s gate voltage, limiting the output
current to about 80mA, for example, in a
short-circuit output situation.
Application Information
Enable/Shutdown
The YB1220 comes with an active-high
enable pin that allows the regulator to be
enabled. Forcing the enable pin low
disables the regulator and puts it into the
shutdown mode. This pin cannot be left
floating as it may cause an undetermined
state.
Shutdown
The YB1220 also features a low-power
shutdown mode. It consists of independent
switches to turn off different channel. The
two LDOs are allowed to work in both
active, only one active or both disabled to
keep the lowest current consumption. In the
both shutdown mode, the internal
functional blocks, such as voltage
reference and the error amplifiers, are
turned off completely, and the quiescent
current is less than 1µA. In the single
shutdown mode, the reference circuit and
the active side error amplifier remain
functional whereas the disabled error
amplifier gets into shutdown mode.
Input/Output Capacitor
It is recommended to use a 1.0µF capacitor
on the YB1220 input and a 1.0µF capacitor
on the output. For high regulation
performance, larger input capacitor values
and lower ESRs provide better noise
rejection and line-transient response. The
output noise, load-transient response,
stability, and power-supply rejection can be
improved by using large output capacitors.
Low ESR ceramic capacitors provide
optimal performance and save space.
Thermal Protection Shutdown
The thermal protection shutdown function
protects the device from operating in over
temperature condition. When the junction
temperature exceeds +160°C, the thermal
sensor signals the shutdown logic, turning
off the pass transistor and allowing the IC
to cool down. The thermal sensor turns the
pass transistor on again after the IC’s
Transient Response
The transient response can be improved by
increasing the values of the input and
output bypass capacitors, and through
passive filtering techniques.
YB1220 MRev.1.1
www.yobon.com.tw
8
YB1220
Dual Channel 200mA LDO Regulator
SOT-26 Package Information
YB1220 MRev.1.1
www.yobon.com.tw
9
YB1220ST26RBB 相关器件
| 型号 | 制造商 | 描述 | 价格 | 文档 |
| YB1220ST26RBY | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
|
| YB1220ST26RY | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
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| YB1220ST26RYA | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
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| YB1220ST26RYB | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
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| YB1220ST26RYY | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
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| YB1220ST26T | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
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| YB1220ST26TA | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
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| YB1220ST26TAA | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
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| YB1220ST26TAB | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
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| YB1220ST26TAY | YOBON | Dual Channel 200mA LDO Regulator | 获取价格 |
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