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FAN1950 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – 1.5A Low-Voltage Low-Dropout Regulator | |||
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www.fairchildsemi.com
FAN1950/FAN1951
1.5A Low-Voltage Low-Dropout Regulator
Features
⢠1.5A minimum guaranteed output current
⢠500mV maximum dropout at 1.5A
Ideal for 2.5V to 1.8V or 1.65V conversion
Ideal for 3.0V to 2.5V conversion
⢠Current Limiting and Thermal shutdown
⢠External Shut-down control (FAN1951 only)
⢠Error ï¬ag output (FAN1951 only)
⢠Fast transient response
⢠Low ground current
Applications
⢠General purpose conversion for low-voltage CPUs,
DSP and FPGAs
⢠SMPS post regulator
⢠Cable/Satellite set-top boxes
⢠PCI Graphics adapter cards
General Description
The FAN1950 and FAN1951 are 1.5A low-dropout linear
regulators that provide a low voltage, high current output
with a minimum of external components. Both of these
devices use a PNP output pass element achieving a maxi-
mum 500mV dropout at 1.5A load current. In addition these
devices offer overcurrent limit and thermal shutdown
features to ensure full protection.
The FAN1951 offers a logic level enable pin and an error
ï¬ag output to indicate undervoltage and over-current condi-
tions. 1.8V and 2.5V ï¬xed output versions are available.
3.3V, 1.65V and 1.5V options are available upon request.
Typical Application
FAN1950-2.5V
FAN1951-1.8V
3.0V
2.5V
IN OUT
GND
10µF
2.5V IN OUT
100Kâ¦
Error Output
On/Off
FLAG
EN
GND
1.8V
10µF
REV. 0.1.6 8/30/04
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