LT3437 LINER [Linear Technology], LT3437 Datasheet - Page 24

• Manufacturer Part Number: LT3437
• Description: High Voltage 500mA, 200kHz Step-Down Switching Regulator with 100uA Quiescent Current
• Manufacturer: LINER [Linear Technology]

RELATED PARTS
LT3437
TYPICAL APPLICATIO
1500pF
24
PART NUMBER
LT1765
LT1766
LT1767
LT1776
LT1936
LT1940
LT1956
LT1976
LT1977
LT3010
LT3430
LT3431
LT3433
LT3434/LT3435
LT3470
LTC3727/LTC3727-1 36V, 500kHz, High Efficiency Step-Down DC/DC Controllers
V
4.5V TO
80V*
IN
*FOR INPUT VOLTAGES ABOVE 60V SOME RESTRICTIONS MAY APPLY
25k
14V to 3.3V Step-Down Converter with
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
2.2µF
100V
CER
100µA No Load Quiescent Current
330pF
V
SHDN
SYNC
GND
V
IN
C
LT3437
DESCRIPTION
25V, 3A (I
Converter
60V, 1.2A (I
Converter
25V, 1.5A (I
Converter
40V, 550mA (I
Converter
36V, 1.4A, 500kHz, High Efficiency Step-Down DC/DC Converter
Dual 1.2A (I
Converter
60V, 1.2A (I
Converter
60V, 1.5A (I
Converter
60V, 1.5A (I
Converter
80V, 50mA, Low Noise Linear Regulator
60V, 2.5A (I
Converter
60V, 2.5A (I
Converter
60V, 400mA (I
60V, 3A (I
40V, 300mA, MicroPower Buck Regulator with Integrated Boost and
Catch Diodes
BOOST
V
●
BIAS
C
SW
FAX: [phone]
SS
FB
0.1µF
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
), 1.25MHz, High Efficiency Step-Down DC/DC
), 200kHz, High Efficiency Step-Down DC/DC Converter
0.1µF
27pF
OUT
OUT
), 1.1MHz, High Efficiency Step-Down DC/DC
), 200kHz, High Efficiency Step-Down DC/DC
), 1.25MHz, High Efficiency Step-Down DC/DC
), 500kHz, High Efficiency Step-Down DC/DC
), 200kHz, High Efficiency Step-Down DC/DC
), 500kHz, High Efficiency Step-Down DC/DC
), 200kHz, High Efficiency Step-Down DC/DC
), 500kHz, High Efficiency Step-Down DC/DC
), 200kHz, High Efficiency Step-Down DC/DC
), 200kHz/500kHz, Buck-Boost DC/DC Converter
10MQ100N
100µH BAS21
U
●
www.linear.com
165k
100k
3437 TA04
V
3.3V
400mA
100µF
6.3V
TANT
OUT
200
180
160
140
120
100
80
60
40
20
0
Supply Current vs
Input Voltage
0
10
20
INPUT VOLTAGE (V)
30
40
50
COMMENTS
V
SO-8, TSSOP16E
V
I
V
MS8/E
V
I
V
I
V
V
I
V
V
V
MS8E
V
I
V
I
V
V
V
V
QFN-32, SSOP-28
SD
SD
SD
SD
SD
SD
60
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
: 3V to 25V, V
: 5.5V to 60V, V
: 3V to 25V, V
: 7.4V to 40V, V
: 3.6V to 36V, V
: 3V to 25V, V
: 5.5V to 60V, V
: 3.3V to 60V, I
: 3.3V to 60V, I
: 1.5V to 80V, V
: 5.5V to 60V, V
: 5.5V to 60V, V
: 5V to 60V, V
: 3.3V to 60V, I
: 4V to 40V, V
: 4V to 36V, V
< 25µA, TSSOP16/E
< 30µA, N8, S8
4mA MS8/E
< 25µA, TSSOP16/E
< 30µA, TSSOP-16E
< 30µA, TSSOP-16E
70
3435 TA05
80
100
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT
OUT(MIN)
OUT(MIN)
90
80
70
60
50
30
40
20
10
Q
Q
Q
0
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
0.1
Efficiency and Power Loss
vs Load Current
= 100µA, I
= 100µA, I
= 100µA, I
: 3.3V to 20V, I
© LINEAR TECHNOLOGY CORPORATION 2005
V
V
T
EFFICIENCY
IN
OUT
A
= 25°C
= 12V
= 3.3V
= 1.20V, I
= 1.20V, I
= 1.2V, I
= 1.25V, I
= 0.8V, I
= 1.20V, I
= 1.24V, I
= 1.2V, I
= 1.20V, I
= 1.28V, I
= 1.20V, I
= 1.20V, I
1
POWER LOSS
LOAD CURRENT (mA)
SD
SD
SD
LT/TP 0605 500 PRINTED IN USA
< 1µA, TSSOP-16E
< 1µA, TSSOP-16E
< 1µA, TSSOP-16E
Q
Q
Q
Q
Q
Q
10
= 3.8mA, TSSOP-16E
= 670µA, I
Q
= 1mA, I
= 1mA, I
= 100µA, TSSOP-16E
= 26µA, ThinSOT
Q
Q
Q
Q
Q
Q
= 1.8mA,
= 2.5mA,
= 3.2mA,
= 2.5mA,
= 30µA, I
= 2.5mA,
= 2.5mA,
100
SD
SD
SD
SD
3437 G01
< 15µA,
< 6µA,
< 20µA,
1000
< 1µA,
500
450
400
350
300
250
200
150
100
50
0
3437f