GM66302 Datasheet PDF - Gamma Microelectronics
| Part Number | GM66302 | |
| Description | 3A ULTRA LOW-DROPOUT REGULATOR | |
| Manufacturers | Gamma Microelectronics | |
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Description
The GM66300 series is 3.0A low-dropout linear voltage reg-
ulators that provide a low-voltage, and high-current output
with a minimum of external components.
The GM66300 series offers extremely low dropout
(typically 400mV at 3.0A) and low ground current (typically
36mA at 3.0A).
The GM66300 series is ideal for PC add-in cards that need
to convert from standard 3.0V to 2.5V and 2.5V to 1.8,
down to new, lower core voltages. A guaranteed maximum
dropout voltage of 500mV over all operating conditions
allows the GM66300 series to provide 2.5V from a supply
as low as 3V or 1.8V . The GM66300 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 GM66300 series is fully protected with overcurrent
limiting, thermal shutdown, reversed-battery protection,
reversed-lead insertion protection, and reversed-leakage
protection.
The GM66301 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 GM66300 series comes in the TO-220 and
TO-263 packages, and is an ideal upgrade to older, NPN-
based linear voltage regulators.
The GM66030 is adjustable version.
Features
3.0A minimum guaranteed output current
500mV dropout voltage
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V conversion
1% initial accuracy
Low ground current
Current limiting and Thermal shutdown
Reversed-battery protection
Reversed-leakage protection
Fast transient response
TO-220 and TO-263 packages
TTL/CMOS compatible enable pin (GM66301 only)
Error flag output (GM66301 only)
Adjustable version (GM66302 only)
Application
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
VIN
3.3V
VIN VOUT
GM66300 - 2.5
GND
VOUT
2.5V
+ 47µF
ENABLE
SHUTDOWN
VIN
3.3V
100kW
GM66301 - 2.5
VEN
FLG
VIN VOUT
GND
ERROR FLAG
OUTPUT
+ 47µF
VOUT
2.5V
ENABLE
SHUTDOWN
VIN
3.3V
GM66302
VEN
OUT
VIN GND Adj
10µF
1.25V
+ 47µF
www.gammamicro.com 1
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TYPICAL CHARACTERISTICS
400
350
300 VOUT = 2.5V
250
200 VOUT = 1.8V
150
100
50
0
0
1000
2000
3000
Output Current (mA)
Figure 1. Dropout Voltage vs. Output
Current
600
500
VOUT = 2.5V
400
300 VOUT = 1.8V
200
100
0
-40 -20 0
ILOAD = 3.0A
20 40 60 80 100 120
Temperature (°C)
Figure 2. Dropout Voltage vs.
Temperature
2.8
2.6 ILOAD = 100mA
2.4
2.2
ILOAD = 3A
2
1.8
1.6 ILOAD = 1.5A
1.4
1.2
1.2 1.6 2.0 2.4 2.8 3.2
3.6
Input Voltage(V)
Figure 3. Dropout Characteristics
100
90
80
70
60
50
40
30
20
10
0
0
ILOAD = 3000mA
ILOAD = 1500mA
ILOAD = 1000mA
24
6 8 10 12
Supply Voltage (V)
Figure 4. Ground Current
vs. Supply Voltage
8
7
6 VOUT = 2.5V
5
VOUT = 1.8V
4
3
2
1
ILOAD = 10mA
0
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Figure 5. Ground Current
vs. Temperature
25
20 VOUT = 2.5V
15
VOUT = 1.8V
10
5
ILOAD = 1500mA
0
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Figure 6. Ground Current
vs. Temperature
60
50 VOUT = 2.5V
40 VOUT = 1.8V
30
20
10
0
-40 -20
ILOAD = 3000A
0 20 40 60 80 100 120
Temperature (°C)
Figure 7. Ground Current
vs. Temperature
6
Typical 1.8V Device
5
4 Typical 2.5V Device
3
2
1
0
-40 -20
VIN = VOUT (NOM) + 1V
VOUT =0
0 20 40 60 80 100 120
Temperature (°C)
Figure 8. Short Circuit Current
vs. Temperature
6
Flag High (OK)
5
VIN =5V
4
3
2
1
Flag Low (Fault)
0
0.01 0.1 1 10
100 1000 10000
Resistance (k )
Figure 9. Error Flag Pull-up
Resistor
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for GM66302 electronic component. |
| Information | Total 11 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ GM66302.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| GM66300 | The function is 3A ULTRA LOW-DROPOUT REGULATOR. Gamma Microelectronics | |
| GM66301 | The function is 3A ULTRA LOW-DROPOUT REGULATOR. Gamma Microelectronics | |
| GM66302 | The function is 3A ULTRA LOW-DROPOUT REGULATOR. Gamma Microelectronics | |
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