GMT G952T63U, G952T63T, G952T63D, G952T23U, G952T23T Datasheet
...
Ver: 1.2
Dec 03, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G952
Global Mixed-mode Technology Inc.
1.8V 1A Regulator
Features
Output current in excess of 1A
Output voltage accuracy +2.5%/-2%
Quiescent current, typically 480µA
Internal short circuit current limit
Internal over temperature protection
Applications
PC motherboard
ADSL/Cable Modem
Set-Top-Box
LAN switch/Hub
Broad band access
General Description
The G952 positive 1.8V voltage regulator features
the ability to source 1A of output current. The typical
quiescent current is 0.48mA.
Familiar regulator features such as over temperature and over current protection circuits are provided to prevent it from being damaged by abnormal operating conditions.
Ordering Information
PIN OPTION
ORDER NUMBER PACKAGE TYPE
1 2 3
G952T23U SOT 89 GND V
OUT
V
IN
G952T63U SOT 223 GND V
OUT
V
IN
* For other package types and pin options, please contact us at sales @gmt.com.tw
Order Number Identification
GXXX XX X X
Packing Type
Pin Option
Package Type
Part Number
PACKAGE TYPE PIN OPTION PACKING
T2: SOT 89
1 2 3
U & D: Tape & Reel Direction
T3: TO 220 1: V
OUT
GND VIN T: Tube
T4: TO 252 2: V
OUT
V
IN
GND
T5: TO 263 3: GND V
OUT
VIN
T6: SOT 223 4: GND V
IN
V
OUT
5: V
IN
GND V
OUT
6: V
IN
V
OUT
GND
Typical Application Package Type
[Note 4]: Type of C
OUT
V
IN
G952
C1
1µF
IQ
V
OUT
I
O
C
OUT
10µF
V
IN
G952
C1
1µF
IQ
V
OUT
I
O
C
OUT
10µF
Top View
1
3
TO 220
2
Top View
1
2
3
SOT 89 、、、、 223
Top View
1
2
3
TO252
、、、、
263
Top View
1
3
TO 220
2
Top ViewTop View
1
2
3
SOT 89 、、、、 223
Top View
1
2
3
TO252
、、、、
263
Ver: 1.2
Dec 03, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
2
G952
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
(Note 1)
Input Voltage……………………………………..…..…7V
Power Dissipation Internally Limited….. (Note 2)
Maximum Junction Temperature…..…………… …..150°C
Storage Temperature Range….…..-65°C ≤ T
J
≤+150°C
Lead Temperature, Time for Wave Soldering
SOT 223 Package……………….……………..260°C, 4s
Continuous Power Dissipation (T
A
= +25°C)
SOT 89
(1)
……………………...………………..…....0.5W
SOT 223
(1)
……………………...……………….…....0.8W
Note
(1)
: See Recommended Minimum Footprint
Operating Conditions
(Note 1)
Input Voltage…………………………………..2.7V~6.5V
Temperature Range……………………0°C ≤ T
J
≤125°C
Electrical Characteristics
VIN =3.3V, IO = 1A, CIN = 1µF, C
OUT
=10µF, All specifications apply for TA = TJ = 25°C. [Note 3]
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Voltage 10mA < IO < 1A 1.764 1.800 1.845 V
Line Regulation 3V < VIN < 6.5V, IO = 10mA 3 30 mV
Load Regulation 10mA < IO < 1A 30 50 mV
Output Impedance 200mA DC and 100mA AC, fo = 120Hz 80
mΩ
Quiescent Current V
IN
= 3.3V 480 µA
Ripple Rejection fi = 120Hz,V
ripple
=1V
P-P,
Io = 100mA 53 dB
IO = 0A 880
IO = 100mA 895
IO = 500mA 950
Dropout Voltage
I
O
= 1A 1160
mV
V
IN
= 3V(SOT 223)
Minimum footprint
(0.0625 square inch)
660 mA
V
IN
= 3.3V(SOT 223)
Mounted on 0.53
square inch pcb area
1 A
Output Current
Continuous Test,
T
A
= 25°C, TJ 150°C,
V
OUT
within ±2%
V
IN
= 3.3V(SOT 89)
Mounted on 0.16
square inch pcb area
0.5 A
Short Circuit Current 1.6 A
Over Temperature 150 °C
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.
Note 2:
The maximum power dissipation is a function of the maximum junction temperature, T
Jmax
; total thermal re-
sistance,
θ
JA
, and ambient temperature TA. The maximum allowable power dissipation at any ambient tem-
perature is T
jmax-TA
/
θ
JA
. If this dissipation is exceeded, the die temperature will rise above 150°C and IC
will go into thermal shutdown. For the G952 in SOT 89 package.
θ
JA
is 250°C/W For the G952 in SOT 223
package,
θ
JA
is 156°C/W (See recommend minimum footprint). The safe operation in SOT 89, SOT 223
package, it can see “Typical Performance Characteristics” (Safe Operating Area).
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
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 100mV below its nominal value. Dropout
voltage is affected by junction temperature, load current and minimum input supply requirements.
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.
Load Regulation
The change in output voltage for a change in load
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.
Maximum Power Dissipation
The maximum total device dissipation for which the
regulator will operate within specifications.
Quiescent Bias Current
Current which is used to operate the regulator chip
and is not delivered to the load.
Ver: 1.2
Dec 03, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
3
G952
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(VIN= +3.3V, CIN=1µF, C
OUT
=10µF, TA=25°C, unless otherwise noted.)
Line Transient
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
0 100 200 300 400 500 600 700 800 900 1000
Load Current (mA)
Ground Current (mA)
0
200
400
600
800
1000
1200
1400
1600
0 100 200 300 400 500 600 700 800 900 1000
Load Current (mA)
Dropout Voltage (mV)
1.700
1.720
1.740
1.760
1.780
1.800
1.820
1.840
1.860
1.880
1.900
0 100 200 300 400 500 600 700 800 900 1000
Load Current (mA)
Ootput Voltage (V)
Output Voltage vs. Load Current Dropout Voltage vs. Load Current
Line Transient
Ground Current vs. Load Current
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