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PDF GM66153 Data sheet ( Hoja de datos )
| Número de pieza | GM66153 | |
| Descripción | 1.5A ULTRA LOW-DROPOUT REGULATOR | |
| Fabricantes | Gamma Microelectronics | |
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2016/3/29
GM6615X Series
1.5A ULTRA LOW DROPOUT VOLTAGE
REGULATORS
Description
Features
The GM66150 series of positive fixed and
adjustable regulators is designed to provide up
to 1.5A output with high current, high accuracy,
and extremely low dropout voltage performance.
These regulators feature 300 to 350mV (full
load) dropout voltages, and very low ground
current. Although designed for high current loads,
these devices are also useful in lower current,
extremely low dropout critical systems, where the
minimal dropout voltage and ground current
values are important characteristics.
Ultra Low Dropout Voltage of 350mV @
1.5A with Low Ground Current
Fixed and Adjustable Voltage Versions
Output Current up to 1.5A
Guaranteed 1% Accurate Tolerance
Extremely Fast Transient Response
Reverse-battery Protection
"Load Dump" Protection
TheGM66150 is fully protected against over
Zero-Current shutdown mode(5-pin
current, reversed input polarity (or reversed
versions) Error flag signals output
battery connection), reversed lead insertion, over
out-of-regulation (5-pin versions)
temperature operation, and transient voltage
spikes (positive or negative).
Five lead fixed voltage versions feature logic
level ON/OFF control and an error flag which
signals whenever the output falls out of
regulation.
For GM66151 and GM66152, the ENABLE pin
may be tied to VIN if it is not required for ON/OFF
control. The GM66150 s er i es is available in
3-pin and 5-pin TO-220 and surface mount
SOT-223 and TO-263 packages.
Application
High Efficiency Linear Regulators
Battery Powered Equipment
Post Regulators for Switching Supplies Automotive Electronics
High Efficiency "Green" Computer
Systems
Typical Application Circuits
5V ± 5%
GM66150-3.3
3.3V ± 1% @1.5A
47µ F
VIN
Fixed Voltage Version
10µ F
R1
R2
VOUT
VOUT= 1.24V X [1 + (R1 /R2)]
22µ F
Adjustable Voltage Version
www.gammamicro.com.tw 1
1 page  
2016/3/29
GM6615X Series
1.5A ULTRA LOW DROPOUT VOLTAGE
REGULATORS
Marking Information and Pin Configurations (Top View)
GM66153 (Green Product)
TO-220-5
TO-263-5
GM66153G
AYWW
GM66153G
AYWW
G: Green Product
A: Assembly / Test site code
Y: Year
WW: Week
5
5 Page 
2016/3/29
GM6615X Series
1.5A ULTRA LOW DROPOUT VOLTAGE
REGULATORS
Application Information
The GM66150 series is a high performance low-dropout voltage regulator suitable for all moderate to high
current/voltage regulator applications. The 350mV dropout voltage at full load makes it especially valuable
in battery powered systems and as high efficiency noise filters in “post-regulator” applications.
Unlike older NPN-pass transistor designs, dropout performance of the PNP output of these devices is
limited merely by the low VCE saturation voltage. The GM66150 family of regulators is fully protected from
damage due to fault conditions. Current limiting is provided. This limiting is linear; output current under
overload conditions is constant.
Thermal shutdown disables the device when the die temperature exceeds the 125°C maximum safe
operating temperature. Transient protection allows device survival even when the input voltage spikes
between -20V and +60V. When the input voltage exceeds about 35V to 40V, the over voltage sensor
temporarily disables the regulator.
VIN
IN OUT
VOUT
GND
Figure 1.Linear regulators require only two capacitors for operation.
Thermal Design
Linear regulators are simple to use. The most complicated design parameters to consider are thermal
characteristics. Thermal design requires the following application-specific parameters:
• Maximum ambient temperature, TA
• Output Current, IOUT
• Output Voltage, VOUT
• Input Voltage, VIN
First, we calculate the power dissipation of the regulator from these numbers and the device
parameters from this datasheet.
PD = IOUT X (1.01VIN - VOUT), Where the ground current is approximated by 1% of IOUT.
Then the heat sink thermal resistance is determined with this formula:
θSA = TJMAX – TA – (θJC+θCS), where TJMAX ≤125°C and θCS is between 0 and 20°C/W
PD
Capacitor Requirements
For stability and minimum output noise, a capacitor on the regulator output is necessary. The value of this
capacitor is dependent upon the output current; lower currents allow smaller capacitors. GM66150 series
are stable with the 10μF minimum capacitor values at full load. Where the regulator is powered from a
source with a high AC impedance, a 0.1μF capacitor connected between Input and GND is recommended.
This capacitor should have good characteristics to above 250kHz.
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet GM66153.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| GM66150 | 1.5A ULTRA LOW-DROPOUT REGULATOR | Gamma Microelectronics |
| GM66151 | 1.5A ULTRA LOW-DROPOUT REGULATOR | Gamma Microelectronics |
| GM66152 | 1.5A ULTRA LOW-DROPOUT REGULATOR | Gamma Microelectronics |
| GM66153 | 1.5A ULTRA LOW-DROPOUT REGULATOR | Gamma Microelectronics |
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