900844 Datasheet, PDF (4/118 Pages) Freescale Semiconductor, Inc – Integrated Power Management IC for Ultra-mobile and Embedded Applications

INTERNAL BLOCK DIAGRAM
PIN DESCRIPTION
The Type Column indicates the maximum average current through each ball assigned to the different nodes, 500 mA
maximum for HIPWR, 300 mA maximum for MDPWR, and 100 mA maximum for LOPWR
Table 1. 900844 Pin Description
Node Name
Type
I/O Rating
# of
Balls
BGA Location
Pin Description
VCC - (0.65 V-1.2 V) / 3.5 A VID CPU BUCK with External FETs
PVINCC
HIPWR
- 4.8 V
2
HSCCGT
HIPWR
- 4.8 V
2
LSCCGT
HIPWR
- 4.8 V
2
PGNDCC
HIPWRGND -
-
2
VOUTFBCC
SGNL
I 4.8 V
1
L5, L7
K2, K4
H2, H4
J1, J3
K8
Gate drivers power supply input
High side FET gate drive
Low side FET gate drive
Local ground for internal circuitry
Output voltage sensing input and negative current sense
terminal
SWFBCC
CSPCC
SGNL
SGNL
I 3.6 V
1
G3
Switch node feedback
I 3.6 V
1
G1
Positive current sense terminal
VNN - (0.65 V-1.2 V) / 1.6 A VID CPU BUCK with External FETs
PVINNN
HIPWR
- 4.8 V
1
HSNNGT
HIPWR
- 4.8 V
1
LSNNGT
HIPWR
- 4.8 V
1
PGNDNN
HIPWRGND -
-
1
VOUTFBNN
SGNL
I 4.8 V
1
L3
Gate drivers power supply input
L1
High side FET gate drive
M2
Low side FET gate drive
L9
Local ground for internal circuitry
M4
Output voltage sensing input and negative current sense
terminal
SWFBNN
CSPNN
SGNL
SGNL
I 3.6 V
1
I 3.6 V
1
N9
Switch node feedback
N11
Positive current sense terminal
VDDQ - 1.8 V / 1.3 A BUCK
PVINDDQ
SWDDQ
PGNDDDQ
FBDDQ
HIPWR
-
HIPWR
-
HIPWRGND -
SGNL
I
4.8 V
4.8 V
-
3.6 V
4
P6, P8, R5, R7 ^{Power supply input}
4
N1, N3, P2, P4 Switch node
4
M6, M8, N5, N7 ^{Power ground}
1
R9
Output voltage feedback input
V21 - 2.1 V / 1.0 A BUCK
PVIN21
SW21
PGND21
FB21
HIPWR
-
HIPWR
-
HIPWRGND -
SGNL
I
4.8 V
4.8 V
-
3.6 V
3
W1, W3, W5 ^{Power supply input}
3
V2, V4, V6
Switch node
3
U1, U3, U5
Power ground
1
V8
Output voltage feedback input
V15 - 1.5 V (or 1.6 V) / 1.5 A BUCK
PVIN15
SW15
PGND15
FB15
HIPWR
- 4.8 V
3
AB2, AB4, AB6 ^{Power supply input}
HIPWR
- 4.8 V
3
AA1, AA3, AA5 ^{Switch node}
HIPWRGND -
-
3
Y2, Y4, Y6
Power ground
SGNL
I 3.6 V
1
W7
Output voltage feedback input
900844
4
Analog Integrated Circuit Device Data
Freescale Semiconductor