LTC3429BES6#TRPBF Linear Technology, LTC3429BES6#TRPBF Datasheet - Page 10

• Manufacturer Part Number: LTC3429BES6#TRPBF
• Description: IC CONV DC/DC SYNC STPUPTSOT23-6
• Manufacturer: Linear Technology
• Type: Step-Up (Boost)r

Specifications of LTC3429BES6#TRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 2.5 ~ 4.3 V
• Current - Output: 600mA
• Frequency - Switching: 500kHz
• Voltage - Input: 0.5 ~ 4.4 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-6, TSOT-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC3429/LTC3429B
Applications Where V
When the output voltage is programmed above 4.3V, it is
necessary to add a Schottky diode either from SW to V
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
TYPICAL APPLICATIO S
10
2.7V TO 4.2V
V
IN
V
IN
+
+
Application Circuit for V
Li-Ion
2 AA
CELL
*LOCATE COMPONENTS CLOSE TO THE PIN
C1: TAIYO YUDEN X5R JMK212BJ475MM
C2: TAIYO YUDEN X5R JMK212BJ106MM
D1: MOTOROLA MBR0520L
L1: COILCRAFT D0160C-472
Application Circuit for V
*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
OUT
C1
4.7µF
OFF ON
OUT
C1
4.7µF
OFF ON
will provide a peak efficiency
> 4.3V
4.7µH
6
4
4.7µH
6
4
L1
L1
V
SHDN
V
SHDN
IN
IN
LTC3429
LTC3429
OUT
U
GND
SW
GND
SW
OUT
1
2
V
1
2
V
> 4.3V Where Inrush Current Limiting and Output Disconnect are Not Required
OUT
OUT
FB
FB
> 4.3V Where Inrush Current Limiting and Output Disconnect are Required
5
3
5
3
D1*
D1*
R1
1.82M
R2
604k
R1
1.82M
R2
604k
3429 TA04
OUT
3429 TA05
MP1
C2
10µF
C2
10µF
,
V
5V
150mA
OUT
V
5V
250mA
OUT
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.
C3*
0.22µF
100
100
90
80
70
60
50
40
90
80
70
60
50
40
0.1
0.1
EFFICIENCY
Li-Ion to 5V Efficiency
EFFICIENCY
2-Cell to 5V Efficiency
1
OUTPUT CURRENT (mA)
1
OUTPUT CURRENT (mA)
V
IN
V
10
V
10
IN
= 4.2V
IN
POWER LOSS
V
= 3.6V
V
POWER LOSS
= 3V
IN
V
IN
IN
= 2.4V
= 3.6V
= 2.4V
V
100
V
100
IN
IN
= 4.2V
= 3V
3429 TA04b
3429 TA05b
1000
1000
100
10
1
0.1
0.01
0.001
0.0001
100
10
1
0.1
0.01
0.001
0.0001
3429fa