GM66500 Datasheet, PDF (1/11 Pages) Gamma Microelectronics Inc. – 5A ULTRA LOW - DROPOUT REGULATOR

AA
MICROELECTRONICS
Power Management
GM66500 SERIES
5A ULTRA LOW - DROPOUT REGULATOR
Description
Features
The GM66500 series is 5.0A low-dropout linear voltage reg-
ulators that provide a low-voltage, high-current output with
a minimum of external components.
The GM66500 series offers extremely low dropout
(typically 400mV at 5.0A) and low ground current (typically
70mA at 5.0A).
The GM66500 series is ideal for PC add-in cards that need
to convert from standard 3.0V to 2.5V and 2.5V to 1.8V,
down to new, lower core voltages. A guaranteed maximum
dropout voltage of 500mV over all operating conditions
allows the GM66500 series to provide 2.5V from a supply
as low as 3V. The GM66500 series also has fast
transient response, for heavy switching applications. The
device requires only 47µF of output capacitance to
maintain stability and achieve fast transient response.
The GM66500 series is fully protected with overcurrent
limiting, thermal shutdown, reversed-battery protection,
reversed-lead insertion protection, and reversed-leakage
protection.
The GM66501 series offers a TTL-logic-compatible enable
pin and an error flag that indicates undervoltage and
overcurrent conditions. Offered in a fixed voltages, 1.8V
and 2.5V, the GM66500 series comes in the TO-220 and
TO-263 packages and is an ideal upgrade to older, NPN-
based linear voltage regulators.
5.0A minimum guaranteed output current
400mV dropout voltage
Designed for 3.0V to 2.5V conversion
Designed for 2.5V to 1.8V conversion
1% initial accuracy
Low ground current
Current limiting and Thermal shutdown
Reversed-battery and reversed-lead insertion
protection
Reversed-leakage protection
Fast transient response
TO-220 and TO-263 packages
TTL/CMOS compatible enable pin (GM66501 only)
Error flag output (GM66501 only)
Ceramic capacitor stable (See Application
Information)
Application
Low Voltage Digital ICs
LDO linear regulator for PC add-in cards
High-efficiency linear power supplies
SMPS post regulator
Multimedia and PC processor supplies
Low-voltage microcontrollers
Strong ARM^TM processor supply
TYPICAL APPLICATION CIRCUITS
100kW
V_IN
3.3V
V_IN
V_OUT
GM66500 - 2.5
+
1.0µF
GND
V_OUT
2.5V
+
47µF
ENABLE
SHUTDOWN
V_IN
3.3V
GM66501 - 2.5
V_EN
FLG
V_IN
+
1.0µF
V_OUT
GND
ERROR FLAG
OUTPUT
+
47µF
V_OUT
2.5V
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