LT1610 Linear Technology, LT1610 Datasheet - Page 13

• Manufacturer Part Number: LT1610
• Description: Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter
• Manufacturer: Linear Technology

TYPICAL APPLICATIONS
3.3V TO 8V/70mA, – 8V/5mA, 24V/5mA TFT LCD Bias Supply Uses All Ceramic Capacitors
D2, D3, D4: BAT54S
0.22 F: TAIYO YUDEN EMK212BJ224MG
4.7 F: TAIYO YUDEN LMK316BJ475ML
1 F: TAIYO YUDEN LMK212BJ105MG
3.3V
AV
D1: MOTOROLA MBRO520
L1: SUMIDA CDRH5D185R4
V
IN
DD
LOAD
200mV/DIV
500mV/DIV
200mV/DIV
U
70mA
25mA
AV
V
C1
4.7 F
V
OFF
DD
ON
100k
TFT LCD Bias Supply Transient Response
V
V
51pF
ON
OFF
LOAD = 5mA
LOAD = 5mA
3
1
SHDN
V
C
GND
V
IN
7
6
0.22 F
5.4 H
LT1610
L1
200 s/DIV
PGND
SW
COMP
D2
0.22 F
4
5
FB
D1
8
2
0.22 F
274k
48.7k
1 F
D4
1610 TA19
D3
1610 TA18
1 F
1 F
C2
4.7 F
V
– 8V
5mA
V
24V
5mA
AV
8V
70mA
OFF
ON
DD
LT1610
13