Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
VCC,
SHDN
to GND. . . . . . . . . . . . . . . . .-0.3V to +7V
FB to GND. . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to VCC
SW, OVP to GND. . . . . . . . . . . . . . . . . . . -0.3V to +24V
Operating Temperature . . . . . . . . . . . . . .-40°C to 85°C
G5121
Junction Temperature. . . . . . . . . . . . . . . . . . . . . .125°C
Storage Temperature . . . . . . . . . . . . . ..-65°C to 150°C
Reflow Temperature (soldering, 10sec) . . . . . . . 260°C
ESD Rating (Human Body Model) . . . . . . . . . . . . . .2kV
Stress beyond those listed under “Absolute Maximum Rating” may cause permanent damage to the device.
Electrical Characteristics
(V
CC
=V
SHDN
=3.6V, T
A
=25°C)
PARAMETER
Input Voltage Range
Input Voltage UVLO
Over Voltage Protection Threshold
Over Voltage Protection Threshold
OVP Pin Input Current
Quiescent Current
trigger
release
V
ovp
= 16V
V
FB
= 0.3V (no switching)
V
FB
= 0.2V (switching)
V
SHDN
= 0V
Initial Accuracy
Temperature Coefficient
V
FB
= 0.2V
I
SW
= 150mA
V
SW
= 20V
CONDITIONS
MIN
2.5
1.7
18.5
13.5
---
---
---
---
TYP
---
MAX
6
2.3
21
16.5
UNITS
V
V
V
V
µA
µA
mA
µA
mV
ppm/°C
MHz
%
Ω
µA
mA
µs
V
V
2.0
19.5
15
40
80
---
60
120
2
1
264
---
0.1
254
100
1.0
---
FB Comparator Trip Point
Switching Frequency
Maximum Duty
Switch R
DS(ON)
Switch Leakage Current
Switch Current Limit
Soft Start Time
SHDN
Pin Voltage High
SHDN
Pin Voltage Low
244
---
0.8
85
---
---
1.2
---
0.7
0.1
600
120
---
---
1.0
10
700
---
500
---
2
---
---
0.8
Ver: 1.3
Nov 13, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
2
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
