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PDF GM66500 Data sheet ( Hoja de datos )

Número de pieza GM66500
Descripción 5A ULTRA LOW - DROPOUT REGULATOR
Fabricantes Gamma Microelectronics 
Logotipo Gamma Microelectronics Logotipo



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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 ARMTM processor supply
TYPICAL APPLICATION CIRCUITS
100kW
VIN
3.3V
VIN VOUT
GM66500 - 2.5
+ 1.0µF
GND
VOUT
2.5V
+ 47µF
ENABLE
SHUTDOWN
VIN
3.3V
GM66501 - 2.5
VEN
FLG
VIN
+ 1.0µF
VOUT
GND
ERROR FLAG
OUTPUT
+ 47µF
VOUT
2.5V
www.gammamicro.com 1

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GM66500 pdf
AA
MICROELECTRONICS
Power Management
GM66500 SERIES
5A ULTRA LOW - DROPOUT REGULATOR
TYPICAL CHARACTERISTICS
450
400 VOUT = 1.8V
350
300
250
200 VOUT = 2.5V
150
100
50
0
Output Current (mA)
Figure 1. Dropout Voltage vs. Output
Current
600
VOUT = 1.8V
500
400 VOUT = 2.5V
300
200
100
ILOAD = 5A
0
-40 -20 0 20 40 60 80 100 120 140
Temperature (°C)
Figure 2. Dropout Voltage vs.
Temperature
2.8
2.6 ILOAD = 100mA
2.4
2.2 ILOAD = 2.5A
2 ILOAD = 5A
1.8
1.6
1.4
Input Voltage(V)
Figure 3. Dropout Characteristics
180
160
140
120
100
80
60
40
20
0
0
ILOAD = 5A
ILOAD = 2.5A
ILOAD = 2.0A
2468
Supply Voltage (V)
Figure 4. Ground Current
vs. Supply Voltage
10
10
9
ILOAD = 10mA
VIN = VOUT + 1V
8
7 VOUT = 2.5V
6
5
VOUT = 1.8V
4
3
2
1
0
-40 -20 0 20 40 60 80 100 120 140
Temperature (°C)
Figure 5. Ground Current
vs. Temperature
30
25 VOUT = 2.5V
20
VOUT = 1.8V
15
10
5
0
-40 -20
ILOAD = 2.5A
VIN = VOUT + 1V
0 20 40 60 80 100 120 140
Temperature (°C)
Figure 6. Ground Current
vs. Temperature
80
70
VOUT = 2.5V
60
50 VOUT = 1.8V
40
30
20
10 ILOAD = 5A
VIN = VOUT = 1V
0
-40 -20 0 20 40 60 80 100 120 140
Temperature (°C)
Figure 7. Ground Current
vs. Temperature
10
9 Typical 2.5V Device
8
7 Typical 1.8V Device
6
5
4
3
2
1
0
-40 -20
VIN = VOUT + 1V
0 20 40 60 80 100 120 140
Temperature (°C)
Figure 8. Short Circuit Current
vs. Temperature
6
Flag High (OK)
5
4
3
2
1
Flag Low (Fault)
0
Resistance (k )
Figure 9. Error Flag Pull-up
Resistor
5

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

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