參數(shù)資料
型號： L5100-AN3-R
廠商： 友順科技股份有限公司
英文描述： WHITE LED STEP-UP CONVERTER
中文描述： 白光LED升壓轉(zhuǎn)換器
文件頁數(shù)： 2/7頁
文件大?。?/td> 131K
代理商： L5100-AN3-R
L5100
LINEAR INTEGRATED CIRCUIT
PIN DES CRIPT ION
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
QW-R103-024,A
2
PIN NO.
SOT-25 SOT-363
PIN NAME
SYMBOL
FUNCTION
1
1
Switch
SW
Connect inductor/diode here. Minimize trace area at this pin to
reduce EMI.
Connect directly to local ground plane.
Reference voltage is 95mV. Connect cathode of lowest LED and
resistor here. Calculate resistor value according to the formula:
R
FB
= 95mV/I
LED
SHDN
Connect to 1.5V or higher to enable device; 0.4V or less to disable
device.
V
IN
Input Supply Pin. Must be locally bypassed.
2
2/5
Ground
GND
3
3
Feedback
FB
4
4
Shutdown
5
6
Input Supply
BLOCK DIAGRAM
5
V
REF
1.25V
3
1
2
4
95mV
V
IN
FB
Pin 5 (SOT-25)
Pin 6 (SOT-363)
-
+
A1
-
+
-
+
A2
Rc
Cc
Σ
RAMP
GENERATOR
1.2MHz
TIME CONTROL
R
S
Q
DRIVER
SW
Q1
GND
Pin 2/5 (SOT-363)
Pin 2 (SOT-25)
0.2
Ω
SHUTDOWN
Slope compensation
SHDN
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