LP3913 Datasheet, PDF (3/70 Pages) Texas Instruments – Power Management IC for Flash Memory-Based Portable Media Players

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Connection Diagram
LP3913
SNVS489I – NOVEMBER 2006 – REVISED SEPTEMBER 2013
Device Connection Diagram
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48
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Figure 1. 48 WQFN Package (Top View)
Package Number NJV0048A
Part Number
LP3913SQ-AA/LP3913SQX-AA
LP3913SQ-AC/LP3913SQX-AC
LP3913SQ-AD/LP3913SQX-AD
LP3913SQ-ADJ/LP3913SQX-ADJ
LP3913SQ-AE/LP3913SQX-AE
LP3913SQ-AR/LP3913SQX-AR
Table 1. Additional Application Information
LDO1 (V)
2.00
1.30
2.00
1.80
1.30
1.80
LDO2 (V)
3.30
3.30
3.30
3.30
3.30
3.30
Buck1 (V)
1.20
1.30
1.20
ADJ
1.30
1.20
Buck2 (V)
3.30
1.80
1.80
ADJ
3.30
1.80
Buck 3 (V)
3.30
3.30
3.30
3.30
3.30
3.30
ICHRG (mA)
100
100
100
100
100
1000
Pin Descriptions
Pin #
Name
I/O
1 TS
I
2 VBATT1
O
3 AGND
G
4 VREFH
O
5 LDO2EN
I
6 VLDO2
O
7 VIN1
I
8 VLDO1
O
9 POWERACK
I
10 ISENSE
I
11 ADC2
I
12 ADC1
I
13 IRQB
O
Type
A
A
G
A
D
A
PWR
A
D
A
A
A
Open
Drain
Functional Description
Battery temperature sense pin. This pin is normally connected to the thermistor pin of the
battery cell.
Positive battery terminal. This pin must be externally shorted to VBATT2 and VBATT3
Analog Ground
Connection to bypass capacitor for internal high reference
Digital input to enable/disable LDO2
LDO2 Output
Power input to LDO1 and LDO2. VIN1 pin must be externally shorted to the VDD pins.
LDO1 Output
Digital power acknowledgment input (see Power On/Off Sequencing)
A 4.64-kΩ resistor must be connected between this pin and GND. A fraction of the charge
current flows through this resistor to enable the A to D converter to measure the charge
current.
Channel 2 input to AD converter
Channel 1 input to AD converter
Open drain active low interrupt request
Copyright © 2006–2013, Texas Instruments Incorporated
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