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LT3477 Datasheet(PDF) 14 Page - Linear Technology

Part # LT3477
Description  3A, DC/DC Converter with Dual Rail-to-Rail Current Sense
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3477 Datasheet(HTML) 14 Page - Linear Technology

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LT3477
14
3477fc
APPLICATIONS INFORMATION
Figure 9b. PWM Dimming Waveforms
Figure 9a. 10V to 2 White LEDs: Buck-Boost Mode With PWM Dimming
2ms/DIV
ILED
500mA/DIV
IL
1A/DIV
PWM
10V/DIV
3477 F09b
VIN = 10V
2 LEDs
300mA
PWM FREQUENCY = 100Hz
BUCK-BOOST MODE
1M
1k
1k
C2
10μF
C1
3.3μF
VIN
10V
300mA
49.9k
L1
4.7μH
D1
ISN1
ISP1
VIN
IADJ2
IADJ1
FBN
ISP2
FBP
VREF
C1: TAIYO YUDEN LMK316BJ335ML
C2: TAIYO YUDEN UDK325BJ106MM
L1: TOKO D53LC (PN# A915AY-4R7M)
D1: ZETEX ZLLS1000
D2: DIODES INC 1N4148
NMOS1, NMOS2: ZETEX 2N7002
PMOS: SILICONIX Si2303BDS
LED1, LED2: LUMILEDS LXHL-BW02
CC
10nF
CSS
33nF
3477 F09a
6.81k
NMOS1
100k
0
5V
100Hz
PWM
SW
D2
SS
GND
LT3477
ISN2
RT
SHDN
VC
RC
1.5k
RSENSE
0.33Ω
LED2
LED1
PWM
NMOS2
PMOS



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