LTC3458 Linear Technology, LTC3458 Datasheet - Page 16
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LTC3458
Manufacturer Part Number
LTC3458
Description
1.4A/ 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
Manufacturer
Linear Technology
Datasheet
1.LTC3458.pdf
(16 pages)
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LTC3458
TYPICAL APPLICATIO
PART NUMBER
LT1310
LT1613
LT1615/
LT1615-1
LT1618
LT1944 (Dual)
LT1945 (Dual)
LT1946/LT1946A 1.5A I
LT1949/
LT1949-1
LT1961
LTC3400/
LTC3400B
LTC3401
LTC3402
LTC3425
LTC3429
LTC3459
LT3460
LT3464
16
RELATED PARTS
2.7V to 4.2V
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
C
D1, D2: LUXEON EMITTER LUMILED WHITE
L1: Wurth 12µH 774775112
IN
Li-Ion
, C
243k
OUT
Dual Lumiled Application with BURST Pin Current Regulation
LXHLMW1D (2.9V AT 350mA)
: TAIYO YUDEN JMK107BJ225MA
DESCRIPTION
1.5A I
550mA I
300mA/80mA I
Step-Up DC/DC Converter
1.5A I
Dual Output 350mA I
Step-Up DC/DC Converter
Dual Output Pos/Neg 350mA I
High Efficiency Step-Up DC/DC Converter
DC/DC Converter
550mA I
DC/DC Converter
1.5A I
600mA I
1A I
2A I
5A I
QFN32
600mA, 500kHz, Synchronous Step-Up DC/DC Converter
with Output Disconnect and Soft-Start
70mA I
320mA I
85mA I
Converter with Integrated Schottky/Output Disconnect
ON OFF
SW
SW
SW
SW
SW
SW
SW
, 3MHz, Synchronous Step-Up DC/DC Converter
, 3MHz, Synchronous Step-Up DC/DC Converter
, 8MHz, 4-Phase Synchronous Step-Up DC/DC Converter
SW
SW
C
2.2µF
124k
●
SW
SW
SW
SW
, 4.5MHz, High Efficiency Step-Up DC/DC Converter
, 1.4MHz, High Efficiency Step-Up DC/DC Converter
, 1.2MHz/2.7MHZ, High Efficiency Step-Up
, 1.25MHz, High Efficiency Step-Up DC/DC Converter
IN
FAX: (408) 434-0507
, 10V Micropower Synchronous Boost/Output Disconnect V
, Constant Off-Time, High Efficiency Step-Up DC/DC
, 1.4MHz, High Efficiency Step-Up DC/DC Converter
, 600kHz/1.1MHz, High Efficiency Step-Up
, 1.2MHz, Synchronous Step-Up DC/DC Converter
, 1.3MHz, High Efficiency Step-Up DC/DC Converter
V
GND/PGND
SHDN
SYNC
R
I
LIM
IN
T
SW
, Constant Off-Time, High Efficiency
LTC3458
L1
SW
BURST
, Constant Off-Time, High Efficiency
COMP
U
V
OUT
SW
SS
FB
R
Z1: CENTRAL SEMI 6.8V ZENER DIODE SOT-23 CMPZ5235B
BURST
SW
●
: 35.7k FOR 350mA,
www.linear.com
, Constant Off-Time,
47.5k FOR 250mA,
82.5k FOR 150mA
R
BURST
0.01µF
0.01µF
f
OSC
Z1
= 850kHz
33k
0.01µF
D1
D2
3458 TA06a
C
2.2µF
V
6.4V TO 6.8V
OUT
OUT
COMMENTS
V
MS10E
V
V
ThinSOT
V
V
V
V
V
MS8
V
V
ThinSOT
V
V
V
V
ThinSOT
V
ThinSOT
V
ThinSOT
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
: 2.75V to 18V, V
: 0.9V to 10V, V
: 1.2V to 15V, V
: 1.6V to 18V, V
: 1.2V to 15V, V
: 1.2V to 15V, V
: 2.45V to 16V, V
: 1.5V to 12V, V
: 3V to 25V, V
: 0.5V to 5V, V
: 0.5V to 5V, V
: 0.5V to 5V, V
: 0.5V to 4.5V, V
: 0.5V to 5V, V
: 1.5V to 5.5V, V
: 2.5V to 16V, V
: 2.3V to 10V, V
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
100
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
90
80
70
60
50
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
2.0
NOTE: LUMILED CURRENT REGULATION
~10% OVER V
2-Lumileds in Series
2.5
= 35V, I
= 5V, I
= 6V, I
= 6V, I
= 5V, I
© LINEAR TECHNOLOGY CORPORATION 2004
150mA, 6.4V
= 34V, I
= 34V, I
= 35V, I
= 34V, I
= ±34V, I
= 28V, I
= 36V, I
= 34V, I
= 5.25V, I
= 10V, I
= 35V, I
= 34V, I
3.0
INPUT VOLTAGE (V)
350mA, 6.8V
IN
Q
Q
Q
Q
www.DataSheet4U.com
3.5
Q
RANGE
= 19µA/300µA I
= 38µA I
= 38µA I
= 20µA/300µA I
= 0.9mA, I
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
LT/TP 0904 1K • PRINTED IN USA
= 3mA, I
= 20µA, I
= 1.8mA, I
= 20µA, I
= 4.5mA, I
= 2mA, I
= 25µA, I
= 10µA, ThinSOT
Q
4.0
= 12mA, I
= 3.2mA, I
= 20µA, I
= 12µA, I
250mA, 6.6V
4.5
SD
SD
SD
SD
SD
< 1µA, MS10
< 1µA, MS10
SD
SD
SD
5.0
SD
SD
SD
3458 TA06b
SD
< 6µA, MS8E
< 1µA, ThinSOT
SD
< 1µA, SC70,
SD
< 1µA,
< 1µA, MS10
< 1µA,
SD
SD
< 1µA, MS10
< 25µA, SO-8,
< 1µA, MS10
< 1µA,
5.5
< 1µA, MS8
< 1µA,
< 1µA,
< 1µA,
3458f