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參數(shù)資料
| 型號： | APE8901GN2 |
| 廠商： | ADVANCED POWER ELECTRONICS CORP |
| 元件分類： | 可調(diào)正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | ADJUSTABLE POSITIVE LDO REGULATOR, PDSO8 |
| 封裝： | 2 X 2 MM, LEAD FREE, DFN-8 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 551K |
| 代理商： | APE8901GN2 |
Advanced Power
Electronics Corp.
1A ULTRA LOW DROPOUT LINEAR REGULATOR
FEATURES
DESCRIPTION
Ultra Low Dropout - 0.2V(typical) at 1A Output Current
Low ESR Output Capacitor (Multi-layer Chip
Capacitors (MLCC)) Applicable
0.8V Reference Voltage
Fast Transient Response
Adjustable Output Voltage by External Resistors
Power-On-Reset Monitoring on Both VCNTL and VIN Pins
Internal Soft-Start
Under-Voltage Protection
Current-Limit and Thermal Shutdown Protection
Power-OK Output with a Delay Time
ESOP-8, SOT-26 and DFN 2x2 Pb-Free Packages.
TYPICAL APPLICATION CIRCUIT
1. Using an Output Capacitor with ESR > 20m
2. Using an MLCC as the Output Capacitor
Data and specifications subject to change without notice
200906252
APE8901
1
The APE8901 is a 1A ultra low dropout linear
regulator. This product is specifically designed to provide
well supply voltage for front-side-bus termination on
motherboards and NB applications. The IC needs two
supply voltages, a control voltage for the circuitry and a
main supply voltage for power conversion, to reduce
power dissipation and provide extremely low dropout. The
APE8901 integrates many functions. A Power-On-Reset
(POR) circuit monitors both supply voltages to prevent
wrong operations. A thermal shutdown and current limit
functions protect the device against thermal and current
over-loads. A POK indicates the output status with time
delay which is set internally. It can control other converter
for power sequence. The APE8901 can be enabled by
other power system. Pulling and holding the EN pin below
0.3V shuts off the output.
The APE8901 is available in ESOP-8, SOT-26 and
DFN 2x2 packages. That features small size as SOP-8
with an Exposed Pad to reduce the junction-to-case
resistance, being applicable in 2~3W applications.
C1
1uF
R1
1K
Vout=1.2V/1A
VIN=1.5V
R3
1K
VCNTL=5V
C4
220uF
C5
0.1u
U1
APE8901
VCNTL
FB
VOUT
GND
NC
EN
POK
VIN
C2
100uF
C3
0.1uF
C6
12~48nF
R2
2K
OFF
ON
VIN=1.5V
R3
1K
Vout=1.2V/1A
VFB = 0.8V
U2
APE8901
VCNTL
FB
VOUT
GND
NC
EN
POK
VIN
C6
56pF
C5
22u
C1
1uF
C3
22uF
VOUT=VFB*(1+R1/R2)
VCNTL=5V
R2
78K
R1
39K
OFF
ON
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