G961-15ADJTEU [GMT]
1A Low Dropout Regulator with Enable; 1A低压降稳压器与启用
| 型号： | G961-15ADJTEU |
| 厂家： | 
GLOBAL MIXED-MODE TECHNOLOGY INC |
| 描述： | 1A Low Dropout Regulator with Enable |
| 文件： | 总6页 (文件大小：231K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Global Mixed-mode Technology Inc.
G961
1A Low Dropout Regulator with Enable
Features
General Description
Adjustable Output from 1.2V to 4.8V Using Ex-
The G961 is a high performance positive voltage
regulator designed for use in applications requiring
very low dropout voltage at up to 1 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 G961 provides excellent regulation
over variations in line, load and temperature.
ternal Resistors
1.5V, 1.8V and 2.5V Options by Setting ADJ Pin
Below 0.2V
Over current and over temperature protection
400mV dropout @1A
Enable pin
10µA quiescent current in shutdown
SOT-89-5 Package
Applications
The SOT-89-5 is available with 1.5V, 1.8V and 2.5V
internally preset outputs that are also adjustable using
external resistors.
Battery powered systems
Motherboards
Peripheral cards
Network cards
Set Top Boxes
Medical Equipment
Notebook Computers
Ordering Information
ORDER
NUMBER
ORDER NUMBER
TEMP.
RANGE
MARKING
PACKAGE
(Pb free)
G961-15ADJTEU
G961-18ADJTEU
G961-25ADJTEU
Note: TE: SOT-89-5
U : Tape & Reel
G961-15ADJTEUf
G961-18ADJTEUf
G961-25ADJTEUf
961-15
961-18
961-25
-40°C ~ +85°C
-40°C ~ +85°C
-40°C ~ +85°C
SOT-89-5
SOT-89-5
SOT-89-5
e.g. 18 denotes the 1.8V output voltage.
Pin Configuration
Typical Application Circuit
G961
IENH
R3
VEN
VIN
VO
VEN
VIN
VO
G961
VIN
5
VEN
4
GND
ADJ
R1
R2
C1
22µF
C2
47µF
1
2
3
ADJ
VO
GND
SOT-89-5
1.2 (R1+R2)
Volts
VO =
R2
R2=12kΩ is recommended
R3 should be connected for current IENH
restriction as VEN > VIN+0.3V
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Apr 01, 2005
1
Global Mixed-mode Technology Inc.
G961
Absolute Maximum Ratings
(Note 1)
Input Voltage……………………………………………..7V
VEN Voltage…………..…………………………..VIN+0.3V
Operation Conditions (Note 1)
Input Voltage………………………………….2.2V ~5.5V
Temperature Range………….………-40°C ≤TA ≤ +85°C
Power Dissipation Internally Limited
(Note 2)
Maximum Junction Temperature…………………150°C
Storage Temperature Range……..-65°C ≤TJ ≤ +150°C
Reflow Temperature (soldering, 10sec)……..….260°C
Thermal Resistance Junction to Ambient, (θJA)
SOT-89-5………………………….…………..…128°C/W
Thermal Resistance Junction to Case, (θJc)
SOT-89-5……………………………….…………19°C/W
ESD Rating (Human Body Model)…………..………2kV
Electrical Characteristics
VEN=VIN, VIN =5V, IO = 0.5A, CIN = 4.7µF, COUT =10µF, TA = TJ = 25°C unless otherwise specified (Note 3)
PARAMETER
Supply Voltage
SYMBOL
CONDITION
MIN
2.2
-2
TYP
---
MAX
5.5
2
UNIT
V
VIN
VO
Output Voltage
Line Regulation
Load Regulation
VIN=VO +0.7V, IO=10mA
VO
%
VO+0.7V < VIN < 5.5V, IO=10mA
10mA < IO < 1A
---
0.2
0.8
1.7
16
2
%
---
2
%
VIN=3.3V,VEN=VIN
VIN=3.3V,VEN=0V
---
2.5
35
---
mA
µA
dB
V
Quiescent Current
IQ
---
Ripple Rejection
fi=120Hz, 1VP-P, IO=100mA
IO=1A
---
55
Dropout Voltage
VD
---
0.4
0.8
150
---
0.6
---
Short Circuit Current
Over Temperature
VEN Voltage High
---
A
---
---
°C
V
VENH
VENL
IENL
Output Active
1.6
---
---
VEN Voltage Low
Output Disabled
VEN=0.4V
---
0.4
20
1.212
---
V
VEN Bias Current Low
ADJ Reference Voltage
ADJ Pin Threshold
---
---
µA
V
VREF
VIN=2.2V, VADJ=VOUT, IO=10mA
1.188
---
1.2
0.2
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 resis-
tance, 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 type of output capacitor should be tantalum or aluminum.
Definitions
Dropout Voltage
Load Regulation
The input/output Voltage differential at which the regula-
tor 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 mini-
mum input supply requirements.
The change in output voltage for a change in load cur-
rent 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.
Maximum Power Dissipation
Line Regulation
The maximum total device dissipation for which the
regulator will operate within specifications.
The change in output voltage for a change in input voltage.
The measurement is made under conditions of low dissi-
pation 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.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Apr 01, 2005
2
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
G961
VEN=VIN, VIN =5V, IO = 0.5A, CIN = 4.7µF, COUT =10µF, TA = TJ = 25°C
(VOUT=1.8V)
Line Transient Response
Load Transient Response
Short Circuit Current
Ripple Rejection
60
IL=10mA
50
40
30
20
10
0
IL=1A
IL=500mA
VIN=4V
OUT=10µF
Vripple=224mV
C
10
100
1000
10000
100000 1000000
Frequency (Hz)
Overcurrent Protection Characteristics
Start-up
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Apr 01, 2005
3
Global Mixed-mode Technology Inc.
Typical Performance Characteristics (Continued)
G961
Quiescent Current vs. Temperature
Dropout Voltage vs. IL
2.00
1.95
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
700
600
500
400
300
200
100
0
VIN=5.0V
VIN=3.0V
T=85°C
T=-25°C
T=25°C
-25 -15 -5
5
15 25 35 45 55 65 75 85
Temperature (°C)
0
200
400
600
800
1000
IL (mA)
Output Voltage vs. VIN
Output Voltage vs. Temperature
1.824
1.819
1.814
1.809
1.804
1.799
1.794
1.789
1.784
1.825
1.82
1.815
1.81
1.805
1.8
IL=10mA
VIN=5.0V
VIN=3.0V
T=85°C
T=25°C
T=-25°C
5.5
2.5
3.5
4.5
6.5
-25 -15 -5
5
15 25 35 45 55 65 75 85
Temperature (°C)
VIN (V)
SOT-89-5 Max. Power Dissipation
vs. TAMB (still air)
SOT-89-5 Max. Power Dissipation
vs. PCB Top Copper Area
TAMB = 25°C ; Still Air
( Different PCB Top Copper Area )
3
2.5
2
2.5
2
Unit:in2
A=0.5
A=1.0
A=1.5
A=2.0
A=2.5
A=3.0
A=3.5
A=4.0
A=4.5
A=5.0
1.5
1
1.5
1
0.5
0
0.5
0
0.5
1.5
2.5
3.5
4.5
25
45
65
85
PCB Top Copper Area (in2)
TAMB (°C)
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Apr 01, 2005
4
Global Mixed-mode Technology Inc.
G961
Recommended Minimum Footprint
SOT-89-5
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Apr 01, 2005
5
Global Mixed-mode Technology Inc.
G961
Package Information
A
C
D
F
E
L
B
I
K
H
J
G
SOT-89-5 Package
DIMENSION IN MM
MAX
DIMENSION IN INCH
MIN
SYMBOL
MIN
4.40
4.05
1.50
1.30
2.40
0.80
MAX
0.181
0.167
0.067
0.059
0.102
-----
A
B
C
D
E
F
G
H
I
4.60
4.25
1.70
1.50
2.60
-----
0.173
0.159
0.059
0.051
0.094
0.031
3.00 REF
1.50 REF
0.118 REF
0.059 REF
0.40
1.40
0.35
0.52
1.60
0.41
0.016
0.055
0.014
0.020
0.063
0.016
J
K
L
5º TYP
5º TYP
Taping Specification
PACKAGE
Q’TY/REEL
SOT-89-5
1,000 ea
Feed Direction
SOT-89-5 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: 1.2
Apr 01, 2005
6
相关型号：
©2020 ICPDF网 联系我们和版权申明