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G5121 Fiches technique(PDF) 2 Page - Global Mixed-mode Technology Inc

No de pièce G5121
Description  Fixed Frequency White LED Step-Up Converter
Download  9 Pages
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Fabricant  GMT [Global Mixed-mode Technology Inc]
Site Internet  http://www.gmt.com.tw
Logo GMT - Global Mixed-mode Technology Inc

G5121 Fiches technique(HTML) 2 Page - Global Mixed-mode Technology Inc

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Ver: 1.1
Nov 17, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
2
G5121
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
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
(VCC=V SHDN =3.6V, TA=25°C)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range
2.5
---
6
V
Input Voltage UVLO
1.7
2.0
2.3
V
Over Voltage Protection Threshold
trigger
18.5
19.5
21
V
Over Voltage Protection Threshold
release
13.5
15
16.5
V
OVP Pin Input Current
Vovp = 16V
---
40
60
µA
VFB = 0.3V (no switching)
---
80
120
µA
VFB = 0.2V (switching)
---
---
2
mA
Quiescent Current
V SHDN = 0V
---
0.1
1
µA
Initial Accuracy
244
254
264
mV
FB Comparator Trip Point
Temperature Coefficient
---
100
---
ppm/°C
Switching Frequency
VFB = 0.2V
0.8
1.0
1.2
MHz
Maximum Duty
85
---
---
%
Switch RDS(ON)
ISW = 150mA
---
0.7
1.0
Ω
Switch Leakage Current
VSW = 20V
---
0.1
10
µA
Switch Current Limit
500
600
700
mA
Soft Start Time
---
120
---
µs
SHDN
Pin Voltage High
2
---
---
V
SHDN
Pin Voltage Low
---
---
0.8
V


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