GMT G962-18ADJTJUF 2a low dropout regulator with enable Datasheet

G962
Global Mixed-mode Technology Inc.
2A Low Dropout Regulator with Enable
Features
General Description
„
The G962 is a high performance positive voltage
regulator designed for use in applications requiring
very low dropout voltage at up to 2 Amps. Since it has
superior dropout characteristics compared to regular
LDOs, it can be used to supply 2.5V on motherboards
or 1.5V, 1.8V on peripheral cards from the 3.3V supply
thus allowing the elimination of costly heatsinks. An
enable pin further reduces power dissipation while
shut down. The G962 provides excellent regulation
over variations in line, load and temperature.
„
„
„
„
„
„
„
„
„
Adjustable Output from 1.2V to 4.8V Using External Resistors
1.5V, 1.8V and 2.5V options by Setting ADJ Pin
Below 0.2V
Fixed 2.5V, 3.3V and 5V Output for TO-252
Over current and over temperature protection
500mV dropout @2A
Enable pin
10µA quiescent current in shutdown
Output recovery mode in OTP
Connect ADJ to GND for fixed output mode
TO-252 and TO-252-5 Package
The G962 is available with 1.5V, 1.8V, 2.5V, 3.3V and
5V internally preset outputs.
Applications
„
Battery powered systems
Motherboards
„ Peripheral cards
„ Set Top Boxes
„ Notebook Computers
„
Ordering Information
ORDER NUMBER
ORDER NUMBER
(Pb free)
MARKING
TEMP. RANGE
PACKAGE
G962-25T45U
G962-25T45Uf
G962-25
-40°C ~ +85°C
TO-252
G962-33T45U
G962-50T45U
G962-33T45Uf
G962-50T45Uf
G962-33
G962-50
-40°C ~ +85°C
-40°C ~ +85°C
TO-252
TO-252
G962-15ADJTJU
G962-15ADJTJUf
G962-15
-40°C ~ +85°C
TO-252-5
G962-18ADJTJU
G962-25ADJTJU
G962-18ADJTJUf
G962-25ADJTJUf
G962-18
G962-25
-40°C ~ +85°C
-40°C ~ +85°C
TO-252-5
TO-252-5
Note: T4: TO-252
TJ:TO-252-5
U : Tape & Reel
e.g. 18 denotes the 1.8V output voltage.
Pin Configuration
Typical Application Circuit
2
3
VIN
GND
VO
VIN
VIN
VO
VO
R1
C1
4.7µF
3
4
ADJ
R2
Top View
2
GND
C2
10µF
TO-252
1
G962
VEN
VEN
Top View
1
IENH
R3
G962-XXT45
1.2 (R1+R2)
Volts
R2
R2=12kΩ is recommended
R3 should be connected for current IENH
restriction as VEN > VIN+0.3V
VO =
5
VEN VIN GND VO ADJ
TO-252-5
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
1
G962
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
(Note 1)
Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
VEN Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . VIN+0.3V
Power Dissipation Internally Limited
(Note 2)
Maximum Junction Temperature. . . . . . . . . . . . .150°C
Storage Temperature Range . . . . -65°C ≤TJ ≤ +150°C
Reflow Temperature (Soldering, 10 sec) . . . . . .260°C
Thermal Resistance Junction to Ambient, (θJA)
TO-252, TO-252-5 . . . . . . . . . . . . . . . . . . . . .95°C/W
Thermal Resistance Junction to Case, (θJC)
TO-252, TO-252-5. . . . . . . . . . . . . . . . . . . . . . 8°C/W
ESD Rating (Human Body Model) . . . . . . . . . . . . .2kV
Operation Conditions
(Note 1)
Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2V ~7V
Temperature Range. . . . . . . . .. . . . . . -40°C ≤TA ≤ +85°C
Electrical Characteristics
VEN=VIN, VIN =5V, IO = 0.5A, CIN = 4.7µF, COUT =10µF, TA = TJ = 25°C unless otherwise specified (Note 3)
PARAMETER
SYMBOL
CONDITION
MIN
TYP
MAX
UNIT
Output Voltage
Line Regulation
Load Regulation
VO
Quiescent Current
IQ
Ripple Rejection
Dropout Voltage
Short Circuit Current
Over Temperature
VEN Voltage High
VEN Voltage Low
VEN Bias Current Low
ADJ Reference Voltage
ADJ Pin Threshold
VD
VENH
VENL
IENL
VREF
VIN=VO +0.7V, IO=10mA
VO+0.7V < VIN < 5.5V, IO=10mA
10mA < IO < 2A
VO=3.3V,VEN=VIN
VEN=0V
fi=120Hz, 1VP-P, IO=100mA
G962-15, IOUT = 2A
G962-18, IOUT = 2A
G962-25, IOUT = 2A
G962-33, IOUT = 2A
G962-50, IOUT = 2A, VIN=6V
(Note 4)
Output Active
Output Disabled
VEN=0.4V
VIN=2.2V, VADJ=VOUT, IO=10mA
-2
------------------------1.6
----1.176
---
VO
0.2
0.8
3
16
55
0.9
0.7
0.6
0.5
0.45
0.8
150
------1.2
0.2
2
2
2
3.5
35
--1.1
0.9
0.7
0.6
0.55
------0.4
20
1.224
---
%
%
%
mA
µA
dB
V
A
°C
V
V
µA
V
V
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are
conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications
and test conditions see the Electrical Characteristics.
Note2: The maximum power dissipation is a function of the maximum junction temperature, TJmax ; total thermal resistance,
θJA, and ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is (Tjmax-TA) /
θJA. If this dissipation is exceeded, the die temperature will rise above 150°C and IC will go into thermal shutdown.
Note3: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
Note4: The over temperature point is guarantee by design.
Definitions
current at constant chip temperature. The measurement is made under conditions of low dissipation or by
using pulse techniques such that average chip temperature is not significantly affected.
Dropout Voltage
The input/output voltage differential at which the regulator output no longer maintains regulation against further
reductions in input voltage. Measured when the output
drops 2% below its nominal value, dropout voltage is
affected by junction temperature, load current and minimum input supply requirements.
Maximum Power Dissipation
The maximum total device dissipation for which the
regulator will operate within specifications.
Line Regulation
The change in output voltage for a change in input voltage. The measurement is made under conditions of low
dissipation or by using pulse techniques such that average chip temperature is not significantly affected.
Quiescent Bias Current
Current which is used to operate the regulator chip
and is not delivered to the load.
Output Capacitor for Stable Condition
The G962 can be stable for X5R MLCC capacitor larger than 10µF or POSCAP capacitor larger than 47µF.
Load Regulation
The change in output voltage for a change in load
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
2
Global Mixed-mode Technology Inc.
G962
Typical Characteristics
VEN=VIN, =5V, IO = 0.5A, CIN = 4.7µF, COUT =10µF, TA = TJ = 25°C
G962-25
Line Transient Response
G962-18
Line Transient Response
G962-33
Line Transient Response
G962-50
Line Transient Response
G962-18
Load Transient Response
G962-25
Load Transient Response
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
3
Global Mixed-mode Technology Inc.
G962
Typical Characteristics (continued)
G962-33
Load Transient Response
G962-50
Load Transient Response
G962-18
Short Circuit Current
G962-25
Short Circuit Current
G962-33
Short Circuit Current
G962-50
Short Circuit Current
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
4
G962
Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G962-18
Overcurrent Protection Characteristics
G962-25
Overcurrent Protection Characteristics
G962-50
Overcurrent Protection Characteristics
G962-18
Start-UP
G962-25
Start-UP
G962-50
Start-UP
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
5
G962
Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G962-18
Ripple Rejection
G962-25
Ripple Rejection
70
70
IL=1A
50
IL=2A
40
30
VIN=5V
COUT=10µF
Vripple=224mV
20
10
IL=1A
60
Ripple Rejection (dB)
Ripple Rejection (dB)
60
50
IL=2A
40
30
VIN=5V
COUT=10µF
Vripple=224mV
20
10
0
0
10
100
1000
10000
100000
10
1000000
100
1000
Frequency (Hz)
G962-33
Ripple Rejection
1000000
60
IL=100mA
40
IL=2A
50
Ripple Rejection (dB)
50
Ripple Rejection (dB)
100000
G962-50
Ripple Rejection
60
IL=2A
30
IL=1A
20
COUT=47µF
10
40
IL=10mA
30
IL=1A
20
10
(VIN-VOUT)>VDROPOUT
VRIPPLE<0.5VP-P
COUT=47µF
0
-10
-20
0
10
100
1000
10000
100000
1000000
10
100
1000
G962-18
Quiescent Current vs. Temperature
10000
Frequency (Hz)
Frequency (Hz)
100000
G962-25
Quiescent Current vs. Temperature
4.00
2.00
1.95
3.75
Quiescent Current (mA)
1.90
Quiescent Current (mA)
10000
Frequency (Hz)
VIN=5V
1.85
1.80
1.75
1.70
VIN=3V
1.65
1.60
3.50
VIN=5V
3.25
3.00
VIN=4V
2.75
1.55
1.50
2.50
-25 -15 -5
5
-25 -15 -5
15 25 35 45 55 65 75 85
Temperature (°C)
5
15 25 35 45 55 65 75 85
Temperature (°C)
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
6
G962
Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G962-33
Quiescent Current vs. Temperature
G962-50
Quiescent Current vs. Temperature
5
8
4.5
7
Quiescent Current (mA)
Quiescent current (mA)
4
VIN=6V
3.5
3
2.5
2
VIN=4V
VIN=5V
1.5
1
6
VIN=7V
5
4
VIN=6V
3
0.5
0
2
-40
-20
0
20
40
60
80
-40
100
-20
0
Temperature (°C)
700
900
800
600
700
600
Dropout Voltage (mV)
Dropout Voltage (mV)
80
G962-25
Dropout Voltage vs. Temperature
G962-18
Dropout Voltage vs. Temperature
T=85°C
500
400
T=25°C
300
200
T=85°C
500
400
T=25°C
300
T=-25°C
200
100
T=-25°C
100
0
0
0
0.5
1
IL (A)
1.5
0
2
G962-33
Dropout Voltage vs. Temperature
0.5
1
IL (mA)
1.5
2
G962-50
Dropout Voltage vs. Temperature
0.5
800
700
IL=2A
Dropout Voutput (mV)
0.4
Dropout Voltage (V)
20
40
60
Temperature (°C )
0.3
0.2
0.1
IL=2A
600
500
400
300
200
100
0
0
-40
-20
0
20
40
60
80
100
-40
Temperature (°C)
-15
10
35
60
85
Temperature (°C )
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
7
G962
Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G962-18
Output Voltage vs. Temperature
G962-25
Output Voltage vs. Temperature
1.864
2.545
IL=10mA
2.535
1.844
1.824
Output Voltage (V)
Output Voltage (V)
IL=10mA
VIN=5V
1.804
VIN=3V
1.784
2.525
VIN=5V
2.515
2.505
VIN=4V
2.495
2.485
2.475
1.764
-25 -15 -5
5
-25 -15 -5
15 25 35 45 55 65 75 85
Temperature (°C)
G962-33
Output Voltage vs. Temperature
5.2
IL=1A
3.45
5.15
IL=1A
3.4
3.35
Output Voltage (V)
Output Voltage (V)
15 25 35 45 55 65 75 85
Temperature (°C)
G962-50
Output Voltage vs. Temperature
3.5
VIN=7V
3.3
3.25
VIN=5V
3.2
VIN=7V
5.1
5.05
VIN=6V
5
4.95
3.15
3.1
4.9
-40
-20
0
20
40
60
80
100
-40
-20
Temperature (°C)
0
20
40
60
80
100
Temperature (°C )
Max. Power Dissipation vs. TAMB (still air)
( Different PCB Top Copper Area )
Max. Power Dissipation vs.
PCB Top Copper Area
4.0
4
Max. Dissipation Power (W)
TAMB = 25°C ; Still Air
3.5
Max. Dissipation Power (W)
5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
PCB Top Copper Area (in2)
Unit: in2
A=0.5
3.5
A=1.0
3
A=1.5
2.5
A=2.0
2
A=2.5
A=3.0
1.5
A=3.5
1
A=4.0
0.5
A=4.5
0
A=5.0
25
35
45
55
65
TAMB (°C)
75
85
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
8
Global Mixed-mode Technology Inc.
G962
Recommend Minimum Footprint
TO-252-5
TO-252
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
9
G962
Global Mixed-mode Technology Inc.
Package Information
D
A
D1
C1
B
V
E
A1
L
b1
L3
L1
L2
b
e
e1
C
TO-252 (T4) Package
SYMBOL
MILLIMETERS
INCHES
MIN.
MAX.
MIN.
MAX.
A
A1
2.190
0.000
2.400
0.127
0.086
0.000
0.094
0.005
B
b
0.880
0.500
1.650
0.880
0.035
0.020
0.065
0.035
b1
C
0.700
0.430
0.900
0.580
0.028
0.017
0.035
0.023
C1
D
0.430
6.350
0.580
6.730
0.017
0.250
0.023
0.265
D1
E
5.200
5.400
5.460
6.220
0.205
0.213
0.215
0.245
e
e1
4.500
4.700
0.177
0.185
9.400
2.550
1.400
0.350
10.42
2.900
1.780
1.020
0.370
0.100
0.055
0.014
0.410
0.114
0.070
0.040
L
L1
L2
L3
V
2.300 TYP
0.091 TYP
4.320 REF
0.170 REF
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
10
G962
Global Mixed-mode Technology Inc.
D
A
D1
c1
V
E
L1
A1
L3
L2
e
c
b
e1
TO-252-5 (TJ) Package
SYMBOL
MILLIMETERS
MIN.
INCHES
MAX.
MIN.
MAX.
A
2.190
2.400
0.086
0.094
A1
b
c
0.000
0.400
0.430
0.127
0.880
0.580
0.000
0.016
0.017
0.005
0.035
0.023
c1
D
0.430
6.350
0.580
6.730
0.017
0.250
0.023
0.265
D1
E
5.200
5.400
5.460
6.220
0.205
0.213
0.215
0.245
e
e1
L1
L2
L3
V
1.270 TYP
2.540 TYP
9.400
1.400
2.550
0.050 TYP
1.000 TYP
9.900
1.780
2.900
0.370
0.055
0.100
3.800 REF
0.410
0.070
0.114
0.150 REF
Taping Specification
Feed Direction
TO-252 Package Orientation
PACKAGE
Q’TY/REEL
TO-252
2,500 ea
TO-252-5
2,500 ea
Feed Direction
TO-252-5 Package Orientation
GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.0
Jan 08, 2007
11
Similar pages