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LTC3429ES6#TRPBF

P1-P3P4-P6P7-P9P10-P12
LTC3429/LTC3429B
10
3429fa
TYPICAL APPLICATIO S
U
Applications Where V
OUT
> 4.3V
When the output voltage is programmed above 4.3V, it is
necessary to add a Schottky diode either from SW to V
OUT
,
or to add a snubber network in order to maintain an
acceptable peak voltage on the SW pin. The Schottky diode
between SW and V
OUT
will provide a peak efficiency
improvement but will negate the output disconnect fea-
ture. If output disconnect is required, an active snubber
network is suggested as shown below. Examples of Schot-
tky diodes are: MBR0520L, PMEG2010EA, 1N5817 or
equivalent.
Application Circuit for V
OUT
> 4.3V Where Inrush Current Limiting and Output Disconnect are Required
SW
L1
4.7µH
V
OUT
LTC3429
FB
V
IN
V
IN
2.7V TO 4.2V
SHDN
2
1
3
3429 TA04
R1
1.82M
R2
604k
C2
10µF
C3*
0.22µF
*LOCATE COMPONENTS CLOSE TO THE PIN
C1: TAIYO YUDEN X5R JMK212BJ475MM
C2: TAIYO YUDEN X5R JMK212BJ106MM
D1: MOTOROLA MBR0520L
L1: COILCRAFT D0160C-472
MP1: ZETEX ZXM61P02F
C1
4.7µF
Li-Ion
V
OUT
5V
250mA
MP1
5
D1*
4
6
GND
OFF
ON
+
Application Circuit for V
OUT
> 4.3V Where Inrush Current Limiting and Output Disconnect are Not Required
SW
L1
4.7µH
V
OUT
LTC3429
FB
V
IN
V
IN
SHDN
2
1
3
5
3429 TA05
R1
1.82M
R2
604k
C2
10µF
C1
4.7µF
2 AA
CELL
V
OUT
5V
150mA
D1*
4
6
+
GND
OFF
ON
*LOCATE COMPONENTS CLOSE TO THE PIN
C1: TAIYO YUDEN X5R JMK212BJ475MM
C2: TAIYO YUDEN X5R JMK212BJ106MM
D1: MOTOROLA MBR0520L
L1: COILCRAFT D0160C-472
Li-Ion to 5V Efficiency
OUTPUT CURRENT (mA)
60
EFFICIENCY (%)
80
100
50
70
90
0.1 10 100 1000
3429 TA04b
40
1
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 3.6V
V
IN
= 4.2V
POWER LOSS
0.01
POWER LOSS (W)
1
100
0.001
0.1
10
0.0001
EFFICIENCY
OUTPUT CURRENT (mA)
60
EFFICIENCY (%)
80
100
50
70
90
0.1 10 100 1000
3429 TA05b
40
1
V
IN
= 3V
0.01
POWER LOSS (W)
1
100
0.001
0.1
10
0.0001
POWER LOSS
V
IN
= 3V
V
IN
= 2.4V
EFFICIENCY
V
IN
= 2.4V
2-Cell to 5V Efficiency
LTC3429/LTC3429B
11
3429fa
U
PACKAGE DESCRIPTIO
1.50 – 1.75
(NOTE 4)
2.80 BSC
0.30 – 0.45
6 PLCS (NOTE 3)
DATUM ‘A’
0.09 – 0.20
(NOTE 3)
S6 TSOT-23 0302
2.90 BSC
(NOTE 4)
0.95 BSC
1.90 BSC
0.80 – 0.90
1.00 MAX
0.01 – 0.10
0.20 BSC
0.30 – 0.50 REF
PIN ONE ID
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
3.85 MAX
0.62
MAX
0.95
REF
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
1.4 MIN
2.62 REF
1.22 REF
S6 Package
6-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1636)
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
LTC3429/LTC3429B
12
3429fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2004
LT/TP 1104 1K REV A • PRINTED IN USA
Single AA Cell to 2.5V Synchronous Boost Converter
U
TYPICAL APPLICATIO
SW
L1
4.7µH
V
OUT
LTC3429
FB
V
IN
SHDN
2
1
3
3429 TA03
R1
1.02M
R2
1.02M
C2
10µF
C1
4.7µF
SINGLE
AA CELL
V
OUT
2.5V
130mA
5
4
6
GND
+
OFF
ON
C1: TAIYO YUDEN X5R JMK212BJ475MM
C2: TAIYO YUDEN X5R JMK212BJ106MM
L1: COILCRAFT D0160C-472
PART NUMBER DESCRIPTION COMMENTS
LT1613 550mA (I
SW
), 1.4MHz High Efficiency Step-Up DC/DC 90% Efficiency, V
IN
: 0.9V to 10V, V
OUT(MAX)
= 34V, I
Q
= 3mA, I
SD
< 1µA,
Converter ThinSOT
LT1615/LT1615-1 300mA/80mA (I
SW
), High Efficiency Step-Up V
IN
: 1V to 15V, V
OUT(MAX)
= 34V, I
Q
= 20µA, I
SD
< 1µA, ThinSOT
DC/DC Converters
LT1618 1.5A (I
SW
), 1.25MHz High Efficiency Step-Up DC/DC 90% Efficiency, V
IN
: 1.6V to 18V, V
OUT(MAX)
= 35V, I
Q
= 1.8mA,
Converter I
SD
< 1µA
LTC1700 No R
SENSE
TM
, 530kHz, Synchronous Step-Up DC/DC 95% Efficiency, V
IN
: 0.9V to 5V, I
Q
= 200µA, I
SD
< 10µA, MS10
Controller
LT1930/LT1930A 1A (I
SW
), 1.2MHz/2.2MHz, High Efficiency Step-Up High Efficiency, V
IN
: 2.6V to 16V, V
OUT(MAX)
= 34V, I
Q
= 4.2mA/5.5mA,
DC/DC Converters I
SD
< 1µA, ThinSOT
LT1946/LT1946A 1.5A (I
SW
), 1.2MHz/2.7MHz, High Efficiency Step-Up High Efficiency, V
IN
: 2.45V to 16V, V
OUT(MAX)
= 34V, I
Q
= 32mA,
DC/DC Converters I
SD
< 1µA, MS8
LT1961 1.5A (I
SW
), 1.25MHz High Efficiency Step-Up DC/DC 90% Efficiency, V
IN
: 3V to 25V, V
OUT(MAX)
= 35V, I
Q
= 0.9mA, I
SD
< 6µA,
Converter MS8E
LTC3400/LTC3400B 600mA (I
SW
), 1.2MHz, Synchronous Step-Up 92% Efficiency, V
IN
: 0.85V to 5V, V
OUT(MAX)
= 5V, I
Q
= 19µA/300µA,
DC/DC Converters I
SD
< 1µA, ThinSOT
LTC3401/LTC3402 1A/2A (I
SW
), 3MHz, Synchronous Step-Up 97% Efficiency, V
IN
: 0.5V to 5V, V
OUT(MAX)
= 5.5V, I
Q
= 38µA, I
SD
< 1µA,
DC/DC Converters MS10
LTC3421 3A (I
SW
), 3MHz, Synchronous Step-Up DC/DC 95% Efficiency, V
IN
: 0.5V to 4.5V, V
OUT(MAX)
= 5.25V, I
Q
= 12µA,
Converter with Output Disconnect I
SD
< 1µA, QFN24
LTC3425 5A (I
SW
), 8MHz, 4-Phase Synchronous Step-Up DC/DC 95% Efficiency, V
IN
: 0.5V to 4.5V, V
OUT(MAX)
= 5.25V, I
Q
= 12µA,
Converter with Output Disconnect I
SD
< 1µA, QFN32
LT3464 85mA (I
SW
), High Efficiency Step-Up DC/DC Converter V
IN
: 2.3V to 10V, V
OUT(MAX)
= 34V, I
Q
= 25µA, I
SD
< 1µA, ThinSOT
with Integrated Schottky and PNP Disconnect
No R
SENSE
is a trademark of Linear Technology Corporation.
RELATED PARTS
Single AA Cell to 3.3V
SW
L1
4.7µH
V
OUT
LTC3429
FB
V
IN
SHDN
2
3429 TA06
1
3
C2
10µF
V
OUT
3.3V
100mA
R1
1.02M
C1
4.7µF
SINGLE
AA CELL
5
4
6
GND
+
OFF
ON
R2
604k
C1: TAIYO YUDEN X5R JMK212BJ475MM
C2: TAIYO YUDEN X5R JMK212BJ106MM
L1: COILCRAFT D0160C-472
P1-P3P4-P6P7-P9P10-P12

LTC3429ES6#TRPBF

Mfr. #:
Buy LTC3429ES6#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 600mA, 500kHz Synch Boost Converter w/ Output in ThinSOT
Lifecycle:
New from this manufacturer.
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