Global Mixed-mode Technology Inc.
G1117-XX
1A Low-Dropout Linear Regulator
Features
Available in 1.5V, 1.8V, 2.5V, 3.3V,3.5V Version
Space Saving SOT-223 Package
Internal Short Circuit Current Limiting
Internal Over Temperature Protection
Output Current in Excess of 1A
General Description
The G1117-XX is a low dropout linear regulator
with a dropout of 1.3V at 1A of load current. It is
available in four fixed voltage: 1.5V, 1.8V, 2.5V,
3.3 and 3.5V versions.
The G1117-XX provides over temperature and
over current protection circuits to prevent it from
being damaged by abnormal operating conditions.
The G1117-XX is available in SOT-223 packages.
A minimum of 10
µ
F tantalum electrolytic capacitor
is required at the output to improve the transient
response and stability.
Applications
Post Regulation for Switching DC/DC Con-
verter
High Efficiency Linear Regulator
Battery Charger
Battery Powered Instrumentation
Motherboard
Ordering Information
ORDER
NUMBER
G1117-15T43U
G1117-18T43U
G1117-25T43U
G1117-33T43U
G1117-35T43U
G1117-15T63U
G1117-18T63U
G1117-25T63U
G1117-33T63U
G1117-35T63U
ORDER NUMBER
(Pb free)
G1117-15T43Uf
G1117-18T43Uf
G1117-25T43Uf
G1117-33T43Uf
G1117-35T43Uf
G1117-15T63Uf
G1117-18T63Uf
G1117-25T63Uf
G1117-33T63Uf
G1117-35T63Uf
MARKING
1117-15
1117-18
1117-25
1117-33
1117-35
1117-15
1117-18
1117-25
1117-33
1117-35
TEMP.
RANGE
-40°C~85°C
-40°C~85°C
-40°C~85°C
-40°C~85°C
-40°C~85°C
-40°C~85°C
-40°C~85°C
-40°C~85°C
-40°C~85°C
-40°C~85°C
PACKAGE
TO-252
TO-252
TO-252
TO-252
TO-252
SOT-223
SOT-223
SOT-223
SOT-223
SOT-223
1
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
PIN OPTION
2
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
3
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
* For other package types and pin options, please contact us at sales
@
gmt.com.tw
Order Number Identification
GXXXX-XX XX X
X
Packing Type
Pin Option
Package Type
Voltage
Part Number
PACKAGE TYPE
T4: TO-252
T6: SOT-223
1
3: GND
PIN OPTION
2
V
OUT
3
V
IN
PACKING
U : Tape & Reel
Package Type
Typical Application
[Note 4]: Type of C
OUT
V
IN
G1117-XX
V
IN
GND
C1
1
µ
F
I
O
V
OUT
V
OUT
Top View
Top View
1
2
3
1
2
3
C
OUT
10
µ
F
SOT-223
TO-252
Ver: 1.5
Apr 18, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
(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
Reflow Temperature (soldering, 10sec) . . . . . .260°C
Thermal Resistance Junction to Ambient, (θ
JA
)
SOT-223
(1)
. . . . . . . . . . . . . . . . . . . . . . . . . . .116°C/W
TO-252
(1)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W
Thermal Resistance Junction to Case, (θ
JC
)
SOT-223. . . . . . . . . . . . . . . . . . . . . . . . . . . . .21°C/W
TO-252. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10°C/W
Note
(1)
: See Recommended Minimum Footprint
G1117-XX
Absolute Maximum Ratings
Operating Conditions
(Note 1)
Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . .3V~6V
Temperature Range . . . . . . . . . . . . -40°C
≤
T
A
≤
85°C
Electrical Characteristics
Operating Conditions: V
IN
≤
6V, T
J
= 25°C unless otherwise specified. [Note3]
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Short Circuit Current
CONDITION
10mA< I
OUT
< 1A
(V
OUT
+ 1.5V) < V
IN
< 6V, I
OUT
= 10mA
V
IN
= 5V, 10mA < I
OUT
< 1A
ΔV
OUT
= 2%, I
OUT
= 1A
MIN TYP MAX UNIT
2%
---
---
---
---
0.3
---
---
---
V
O
3
35
1.3
1.6
0.6
50
116
150
3%
30
50
1.4
---
1.5
---
---
---
V
mV
mV
V
A
mA
dB
°C/W
°C
Quiescent Current
Ripple Rejection
f = 120Hz, C
OUT
= 10μF Tantalum, V
ripple
= 2V
P-P
, I
OUT
= 100mA
Thermal Resistor Junction-to-Ambient
SOT-223; Recommended Minimum Footprint
(No heat sink; No air flow)
Thermal Shutdown
Junction Temperature
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, T
Jmax
; total thermal resistance,
θ
JA
,
and ambient temperature T
A
. The maximum allowable power dissipation at any ambient temperature is T
jmax
-T
A
/
θ
JA
. If
this dissipation is exceeded, the die temperature will rise above 150°C and IC will go into thermal shutdown. For the
G1117-XX in SOT-223 package;
θ
JA
is 116°C/W; in the TO-252 package,
θ
JA
is 86°C/W (See recommend minimum
footprint). The safe operation in SOT-223, TO-252 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
Output Voltage
The G1117-XX provides in four fixed voltages = 1.5V,
1.8V, 2.5V, 3.3V and 3.5V. Its quiescent current is
typically 600μA.
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.
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.
Ver: 1.5
Apr 18, 2006
Load Regulation
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
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.
TEL: 886-3-5788833
http://www.gmt.com.tw
2
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(continued)
TO-252 Max. Power Dissipation
vs. PCB Top Copper Area
4
3.5
Max. Dissipation Power (W)
Max. Dissipation Power (W)
G1117-XX
Unit:in
2
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
TO-252 Max. Power Dissipation
vs. T
AMB
( Still Air)
4
3.5
3
2.5
2
1.5
1
0.5
0
3
2.5
2
1.5
1
0.5
0
0.5
1.0
1.5 2.0 2.5 3.0 3.5 4.0
PCB Top Copper Area (in
2
)
4.5
5.0
25
35
45
55
65
T
AMB
(
o
C)
75
85
SOT-223 Max. Power Dissipation
vs. PCB Top Copper Area
3
Max. Dissipation Power (W)
SOT-223 Max. Power Dissipation
vs. PCB Top Copper Area
T
AMB
(Still Air)
3
Max. Dissipation Power (W)
Unit:in
2
A=0.5
2.5
2
1.5
1
0.5
0
0.5
1
1.5
2
2.5
3
3.5
2
2.5
2
1.5
1
0.5
0
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
4
4.5
5
25
45
PCB Top Copper Area (in )
65
T
AMB
(
o
C)
85
Recommend Minimum Footprint
SOT-223
TO-252
Ver: 1.5
Apr 18, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
4
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