GM66500 GAMMA [Gamma Microelectronics Inc.], GM66500 Datasheet

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GM66500

Manufacturer Part Number
GM66500
Description
5A ULTRA LOW - DROPOUT REGULATOR
Manufacturer
GAMMA [Gamma Microelectronics Inc.]
Datasheet
Description
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.
TYPICAL APPLICATION CIRCUITS
V
3.3V
IN
+
1.0µF
V
IN
GM66500 - 2.5
MICROELECTRONICS
A
GND
V
OUT
A
+
47µF
V
2.5V
OUT
ENABLE
SHUTDOWN
V
3.3V
IN
+
Features
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 processor supply
1.0µF
TO-220 and TO-263 packages
TTL/CMOS compatible enable pin (GM66501 only)
Error flag output (GM66501 only)
Ceramic capacitor stable (See Application
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
Information)
5.0A minimum guaranteed output current
V
V
EN
IN
GM66501 - 2.5
5A ULTRA LOW - DROPOUT REGULATOR
Power Management
100kW
GND
GM66500 SERIES
TM
V
FLG
OUT
+
47µF
www.gammamicro.com
ERROR FLAG
OUTPUT
V
2.5V
OUT
1

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GM66500 Summary of contents

Page 1

... 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 ...

Page 2

... GM66500 VVAYWW VVAYWW FLG EN V GND OUT GND IN OUT Pinout On all devices, the Tab is grounded. GM66500/ Three Terminal Pin 1 = Input Ground Output GM66501/ Five Terminal ( Pin 1 = Enable Input Ground Output Flag OUTPUT VOLTAGE PACKAGE 1.8V TO-263-2 TO-263-2 1.8V 1.8V TO-220 TO-263-2 2.5V TO-263-2 2 ...

Page 3

... Ref. FLAG* - EN* * GM66501 ONLY Power Management GM66500 SERIES 5A ULTRA LOW - DROPOUT REGULATOR PIN Function Enable (Input): TTL/CMOS compatible input. Logic high=enable; logic low or open=shutdown. Unregulated Input: +16V maximum supply. Ground: Ground pin and TAB are internally connected. Regulator Output. ...

Page 4

... OUT OUT depends upon the printed circuit layout. See "Applications Information". JA ÷ where T OUT(worst case) J(max) J(min) decreases to 98% of its nominal output voltage with GND OUT = 0V GM66500 SERIES Typ Max Unit % 0.06 0.5 % 0.20 1.0 % ppm/°C 20 100 125 250 ...

Page 5

... LOAD OUT 0 0 -40 - 100 120 140 -40 -20 Temperature (°C) Figure 7. Ground Current vs. Temperature Power Management GM66500 SERIES 5A ULTRA LOW - DROPOUT REGULATOR 2 1.8V OUT 2.6 2 2.5V OUT 2.2 2 1.8 1 LOAD 1 100 120 140 Temperature (°C) Figure 2. Dropout Voltage vs. ...

Page 6

... Output Capacitor V OUT The GM66500 series requires an output capacitor to OUT maintain stability and improve transient response. Proper capacitor selection is important to ensure proper operation. The GM66500 series output capacitor selection is dependent upon the ESR ...

Page 7

... Power Management GM66500 SERIES 5A ULTRA LOW - DROPOUT REGULATOR Error Flag The GM66500 series version features an error flag circuit which monitors the output voltage and signals an error condition when the voltage 5% below the nominal output voltage. The error flag is an open-collector output that can sink 10mA during a fault condition ...

Page 8

... DP0.20 8.40 1.46 1.00 1.27 ± 0.10 2.54 TYP (2.54 ± 0.20) 3° 10.00 ± 0.20 TO-220-5 PACKAGE OUTLINE DIMENSIONS 9.90 ± 0.20 3.60 ± 0.20 8.70 1.30 ± 0.10 1.70 1.50 DP0.20 8.40 1.2 1.7(TYP) 3° 10.00 ± 0.20 8 Power Management GM66500 SERIES 5A ULTRA LOW - DROPOUT REGULATOR 4.50 ± 0.20 2.80 ± 0.10 +0.1 1.30 -0.05 3.70 ± 0.20 3° 4.60 3° 3° 45° 3.00 3-R0.2 +0.1 0.80 ± 0.10 0.50 -0.05 1.52 ± 0.10 2.40 ± 0.20 3° 0.3 4.50 ± 0.20 2.80 ± 0.10 +0.1 1.30 -0.05 3.70 ± ...

Page 9

... TYP (2.54 ± 0.20) 0.40 0.90 3° 3° R 0.3 10.00 ± 0.20 TO-263-5 PACKAGE OUTLINE DIMENSIONS 9.90 15' 0.40 1.20 3° 4.60 1.50 DP0.20 9.20 15.3 1.20 4.90 1.70 TYP 0.80 (1.70 ± 0.20) 0.40 1.75 3° 3° R 0.3 0.90 15.30 10.00 Power Management GM66500 SERIES 5A ULTRA LOW - DROPOUT REGULATOR 4.50 ± 0.20 +0.1 1.30 -0.05 Pad Layout 0.10 ± 0.01 3° R0.30 2.40 ± 0.20 0.42 10.66 2.54 ± 0.10 0.75 +0.1 R0.30 0.50 -0.05 10.0 ± 0.20 7.0 4.0 R 0.45 7.2 9.20 ± 0.20 4.90 ± 0.20 Unit: mm 4.50 1.30 Pad Layout 0.10 3° 2.00 2.40 R0.30 ...

Page 10

... A A MICROELECTRONICS ORDERING NUMBER GM 66500/ 66501 Gamma Micro. Circuit Type Output Voltage 1.8: 1.8V 2.5: 2.5V 3.3: 3.3V 5.0: 5.0V 10 Power Management GM66500 SERIES 5A ULTRA LOW - DROPOUT REGULATOR 1.8 TA3 T Shipping R: Tape & Reel T: Tube Package TA3: TO-263 TB3: TO-220 ...

Page 11

... A A MICROELECTRONICS Power Management GM66500 SERIES 5A ULTRA LOW - DROPOUT REGULATOR 11 ...

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