wm8326 Wolfson Microelectronics plc, wm8326 Datasheet - Page 10

• Manufacturer Part Number: wm8326
• Description: Processor Power Management Subsystem
• Manufacturer: Wolfson Microelectronics plc

(BuckWise™ Step-
DC-DC1, DC-DC2
DC-DC3, DC-DC4
LDO13 (INTVDD)
WM8326
FEATURES OVERVIEW
POWER MANAGEMENT FUNCTIONS
down converters)
Table 1 Power Management Feature Summary
Note: PVDD range is 2.7V to 5.5V
w
noise regulators)
noise regulators)
LDO12 (VPMIC)
DESCRIPTION
control outputs)
(Analogue, low
(Analogue, low
LDO9, LDO10
LDO4, LDO5,
LDO2, LDO3
LDO7, LDO8
EPE1, EPE2
(Sequenced
(Step-down
converters)
LDO11
LDO1
LDO6
VOLTAGE
1.71V to
1.71V to
1.5V to
1.5V to
1.5V to
1.8V to
INPUT
PVDD
PVDD
PVDD
PVDD
PVDD
PVDD
PVDD
PVDD
n/a
n/a
n/a
(50/100mV steps)
(50/100mV steps)
(50/100mV steps)
(50/100mV steps)
(50/100mV steps)
(50/100mV steps)
(12.5mV steps)
0.85V to 3.4V
(25mV steps)
0.6V to 1.8V
0.9V to 3.3V
0.9V to 3.3V
0.9V to 3.3V
VOLTAGE
1V to 3.5V
1V to 3.5V
0.8 to 1.55
OUTPUT
2.1V
2.5V
n/a
Up to 300mA
Up to 200mA
Up to 100mA
Up to 200mA
Up to 150mA
Internal only
Internal only
Up to 10mA
CURRENT
Up to 2.5A
Up to 1.0A
OUTPUT
n/a
10μF to 47μF C
1.0μH - 2.2μH L
22μF - 47μF C
COMPONENTS
EXTERNAL
2.2μH L
2.2μF C
2.2μF C
2.2μF C
0.1μF C
1μF C
1μF C
1μF C
n/a
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
,
,
Best-in-class transient performance.
Dynamic Voltage Scaling (DVS).
Up to 93% efficiency.
Selectable 2/4MHz switching frequency.
FCCM, Auto and Hysteretic switching modes.
Low I
Up to 95% efficiency.
2MHz switching frequency.
FCCM, Auto, Hysteretic switching modes.
Low I
5μA low I
Current limited switch mode.
5μA low I
Current limited switch mode.
5μA low I
Current limited switch mode.
0.003%/mA load regulation.
0.025%/V line regulation.
30μV output noise from 10Hz to 100kHz.
85dB PSRR.
0.004%/mA load regulation.
0.025%/V line regulation.
30μV output noise from 10Hz to 100kHz.
85dB PSRR.
Stable with or without output capacitor.
2μA quiescent current.
Can be enabled in OFF power state.
Option to track DC-DC1 output voltage.
Digital outputs for external regulators etc.
Controlled as part of the programmable
power-up/power-down sequences.
Internal Supply (always ON)
Internal supply when ON
Used for Touch Panel (TPVDD)
Product Brief, October 2010, Rev 1.0
Q
Q
LDO mode.
LDO mode.
Q
Q
Q
mode.
mode.
mode.
FEATURES
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