LP3906SQ-JXXI Datasheet, PDF (3/47 Pages) Texas Instruments – Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C ompatible

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DC SOURCE
4.5 ± 5.5V
LP3906
SNVS456M – AUGUST 2006 – REVISED MAY 2013
Li-ion/polymer cell 3.6V - 4.2V
+
Cvdd
4.7 PF
1 PF 1 PF 1 PF 1 PF _{10 PF}
20 19 12
13 1 7
LP3906 PMIC
10 PF
SYNC
23
FPGA
10
EN_T
15
ENLDO1
16
ENLDO2
22
ENSW1
24
ENSW2
OSC
Power
ON-OFF
Logic
RESET
Clock
divider
AVDD
BUCK1
Lsw1 2.2 PH _1.2V
6
VBUCK1
SW1
*_FB1
Csw1
10 PF
11
CPU
CORE
BUCK2
AVDD
vref
VinLDO12
Thermal
Shutdown
VINLDO1
LDO1
Lsw2 2.2 PH _3.3V
2
*^SW2
FB2
VBUCK2
Csw2
10 PF
I/O
21
LDO1
3.3V
14
Cldo1
0.47 PF
Programmable
Application
Processor
9
SCL
8
SDA
I2C
Logic
Control
and
registers
BIAS
VINLDO2
LDO2
Power On
Reset
LDO2
1.8V
18
Cldo2
0.47 PF
5
GND_SW1
3
GND_SW2
4
GND_C
17
GND_L
VBUCK2 ^3.3V
Flash
Figure 2. Typical Application Circuit
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