APE8858 Datasheet, PDF (1/6 Pages) Advanced Power Electronics Corp. – ULTRA LOW OUTPUT VOLTAGE LINEAR N-FET CONTROLLER

Advanced Power
Electronics Corp.
APE8858
ULTRA LOW OUTPUT VOLTAGE LINEAR N-FET CONTROLLER
FEATURES
Low ESR Output Capacitor (MLCC and POSCAP)
Applicable
0.5V Reference Voltage with 2% Accuracy
Internal Soft-Start
Enable Control
Under-Voltage Short Circuit Protection
Fast Transient Response
Power OK Output with a Delay Time
Adjustable Output Voltage Down to 0.5V
Drive N-Channel MOSFETs
Halogen Free & RoHS Compliant
DESCRIPTION
The APE8858 is an ultra low output voltage linear N-
FET controller. This product is specifically designed to
provide well supply voltage for front-side-bus termination on
motherboards and NB applications. The APE8858 integrates
many functions. A Power-On-Reset (POR) circuit monitors
supply voltages to prevent wrong operations. A POK
indicates the output status with time delay which is set
internally. It can control other converter for power sequence.
The APE8858 can be enabled by other power system.
A 0.5V reference voltage with 2% accuracy provide tight
regulation of the output voltage, enable control, open drain
power good signal, under-voltage protection and soft start.
TYPICAL APPLICATION
VCC=5V
C3
0.1uF
Vin=1.8V
U1
1 _VCC
DRV ⁶
Q1
MOSFET N
C1
4.7uF
Vout=1.5V
2 _GND
FB ⁵
3 _POK
EN ⁴
1000pF
R1
20K
C2
APE8858
10uF
R2
10K
VOUT = 0.5V * (1 + --RR--21-- )
VFB = 0.5V ; R2 range 1 ~ 100k
10K
ORDERING INFORMATION
APE8858 -HF
Package
Y : SOT-26
Halogen Free
Data and specifications subject to change without notice
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200905086