TPS65217A_12 Datasheet, PDF (6/86 Pages) Texas Instruments – SINGLE-CHIP PMIC FOR BATTERY-POWERED SYSTEMS

TPS65217A, TPS65217B, TPS65217C
SLVSB64E – NOVEMBER 2011 – REVISED JULY 2012
www.ti.com
TERMINAL
NAME
NO.
L1
20
VIN_DCDC1
21
VIN_DCDC2
22
L2
23
VDCDC2
24
PB_IN
25
PGOOD
26
SDA
27
SCL
28
VDCDC3
29
PGND
30
L3
31
VIN_DCDC3
32
ISINK2
33
ISINK1
34
ISET1
35
ISET2
36
L4
37
FB_WLED
38
LS1_IN
39
LS1_OUT
40
AGND
41
LS2_IN
42
LS2_OUT
43
nRESET
44
nINT
45
LDO_PGOOD
46
BYPASS
47
INT_LDO
48
POWERPAD
I/O
DESCRIPTION
O Switch pin for DCDC1. Connect to inductor.
I
Input voltage for DCDC1. Must be connected to SYS pin.
I
Input voltage for DCDC2. Must be connected to SYS pin.
O Switch pin for DCDC2. Connect to inductor.
O DCDC2 output/feedback voltage sense input
I
Push-button monitor input. Typically connected to a momentary switch to ground (active
low).
O
Power-good output (push/pull output). Pulled low when any of the power rails are out of
regulation. Behavior is register programmable.
I/O Data line for the I²C interface
I
Clock input for the I²C interface
O DCDC3 output/feedback voltage sense input
Power ground. Connect to ground plane.
O Switch pin for DCDC3. Connect to Inductor.
I
Input voltage for DCDC3. Must be connected to SYS pin.
Input to the WLED current SINK2. Connect to the cathode of the WLED string. Current
I
through SINK1 equals current through ISINK2. If only one WLED string is used, short
ISINK1 and ISINK2 together.
Input to the WLED current SINK1. Connect to the cathode of the WLED string. Current
I
through SINK1 equals current through ISINK2. If only one WLED string is used, short
ISINK1 and ISINK2 together.
I
Low-level WLED current set. Connect a resistor to ground to set the WLED low-current
level.
I
High-level WLED current set. Connect a resistor to ground to set the WLED high-current
level.
O Switch Pin of the WLED boost converter. Connected to Inductor.
I
Feedback pin for WLED boost converter. Also connected to the Anode of the WLED
strings.
I
Input voltage pin for load switch 1/LDO3
O Output voltage pin for load switch 1/LDO3
POWER Analog GND, connect to PGND (PowerPad)
I
Input voltage pin for load switch 2/LDO4
O Output voltage pin for load switch 2/LDO4
I
Reset pin (active low). Pull this pin low and the PMIC will shut down, and after 1s power-
up in its default state.
Interrupt output (active low, open drain). Pin is pulled low if an interrupt bit is set. The
O
output goes high after the bit causing the interrupt in register INT has been read. The
interrupt sources can be masked in register INT, so no interrupt is generated when the
corresponding interrupt bit is set.
O
LDO power good (LDO1 and LDO2 only, push/pull output). Pulled low when either LDO1
or LDO2 is out of regulation.
O
Internal bias voltage (2.25 V). It is not recommended to connect any external load to this
pin.
O
Internal bias voltage (2.30 V). It is not recommended to connect any external load to this
pin.
POWER Power ground connection for the PMU. Connect to GND
6
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