DC/DC PMU. RT5002 Datasheet

RT5002 PMU. Datasheet pdf. Equivalent

RT5002 Datasheet
Recommendation RT5002 Datasheet
Part RT5002
Description 7 + 1 Channel DC/DC PMU
Feature RT5002; RT5002 7 + 1 Channel DC/DC PMU with Li-Ion Battery Charger for DSC General Description The RT5002 .
Manufacture Richtek
Datasheet
Download RT5002 Datasheet




Richtek RT5002
RT5002
7 + 1 Channel DC/DC PMU with Li-Ion Battery Charger for
DSC
General Description
The RT5002 is a complete power supply solution for digital
still cameras and other handheld devices. It includes a
7+1 channel DC/DC power converter unit, a single-cell Li-
ion battery charger, and an I2C control interface.
The power converter unit includes one synchronous step-
up converter and three synchronous step-down converters
for DSP core, I/O, Motor, and memory power supply, one
synchronous high voltage step-up converter and one
asynchronous inverting converter for CCD± bias, one
WLED driver in either synchronous high voltage step-up
or current source operation, and one low quiescent LDO
for RTC application. All converters are internally frequency
compensated and integrate power MOSFETs. The power
converter unit provides complete protection functions: over
current, thermal shutdown, over voltage, over-load, and
under voltage protection.
The battery charger includes Auto Power Path
Management (APPM). No external MOSFETs are required.
The charger enters sleep mode when power is removed.
Charging tasks are optimized by using a control algorithm
to vary the charge rate, including pre-charge mode, fast
charge mode and constant voltage mode. The charge
current can also be programmed with an external resistor
and modified via the I2C control interface. The scope that
the battery regulation voltage can be modified via the I2C
interface depends on the battery temperature. The internal
thermal feedback circuitry regulates the die temperature
to optimize the charge rate for all ambient temperatures.
The charging task will always be terminated in constant
voltage mode when the charging current reduces to the
termination current of 10% x ICHG_FAST. The charger
includes under voltage and over-voltage protection for the
supply input voltage, VIN.
Applications
DSC
Features
Power Converter Unit :
One Channel LV Sync Step-Up and Three Channel
LV Sync Step-Down
Up to 95% Efficiency
One Sync Step-Up and One Async Inverting for
CCD± bias
One WLED Driver in either Sync Step-Up or Current
Source Operation
WLED Driver with Dimming Control
Step-Up Mode with LED Open Protection (OVP7)
One Low Quiescent LDO with Reverse Leakage
Prevention for RTC Power Supply
Preset On/Off Sequence of CH1, CH2, CH3, CH4
(1 3 4 2)
Two Preset On/Off Sequence of CH5, CH6 (5 6 or
6 5)
All Power Switches Integrated with Internal
Compensation
All Step-Up Converters with Load Disconnect
Wake Up Impulse to Monitor BAT and VIN Plug-In
Charger Unit :
28V Maximum Rating for VIN Power
Selectable Power Current Limit (0.1A / 0.5A / 1.5A)
Auto Power Path Management (APPM) and
Integrated Power MOSFETs
Battery Charging Current Control
Battery Regulation Voltage Control
Programmable Charging Current and Safe Charge
Timer
Under Voltage and Over Voltage Protection
Optimized Charge Rate via Thermal Feedback
Interrupt Indicator to Fault/Status Events
I2C Control Interface : Support Fast Mode up to
400kb/s
Voltage Divider for Sensing Battery Voltage Level
Small 40-Lead WQFN Package
RoHS Compliant and Halogen Free
DS5002-00 November 2011
www.richtek.com
1



Richtek RT5002
RT5002
Ordering Information
RT5002
Package Type
QW : WQFN-40L 5x5 (W-Type)
Lead Plating System
Z : ECO (Ecological Element with
Halogen Free and Pb free)
Note :
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
RT5002
ZQW
YMDNN
RT5002ZQW : Product Number
YMDNN : Date Code
Pin Configurations
(TOP VIEW)
40 39 38 37 36 35 34 33 32 31
INT 1
FB1 2
30
29
VDDM 3
28
FB7 4
27
PVD7 5
LX7 6
GND
26
25
BATS 7
24
LX4 8
PVD4 9
41 23
22
FB4 10
21
11 12 13 14 15 16 17 18 19 20
WAKE
FB2
TSSEL
LX5
PVD5
FB5
EN1234
LX3
PVD3
FB3
WQFN-40L 5x5
www.richtek.com
2
DS5002-00 November 2011



Richtek RT5002
RT5002
Typical Application Circuit
For 4-LED Application
CCD
15V
CCD
-7V
Back Light
BAT
SYS
L5 10µH 27 LX5
C14
4.7µF
C12
27pF
R9
287k
26 PVD5
C13
10µF x 2
R10
26.1k
RT5002
L1
LX1 40 2.2µH
C2
10µF
SYS
PVD1 39
FB1 2
C1
10µF x 2
R1
470k
R2
88.7k
C24
4.7pF
SYS
C15
10µF
25 FB5
16 PVD6
C16
10µF x 2
L6 10µH
17 LX6
D1
18 VOUT6
C17
1nF
C18
0.1µF
R11
63.4k
R12
10k
19 FB6
20 VREF
5 PVD7
D2
C19
1µF
L7
D3
SYS
10µH 6 LX7
D4
C20
1µF
D5
R13
10 TSSEL = VIN
for 10k NTC
4 FB7
28 TSSEL
ADAPTER
/USB
37 VIN
C21
2.2µF
33, 34 BAT
+
C22
1µF
PVD2 32
L2
LX2 31 2.2µH
FB2 29
PVD3 22
L3
LX3 23 2.2µH
FB3 21
C3
10µF
SYS
C4
10µF R3
470k
R4
150k
C5
10µF
SYS
R5
470k
R6
374k
C7
33pF
C6
10µF
PVD4 9
L4
LX4 8 2.2µH
FB4 10
C8
10µF
SYS
R7
232k
R8
931k
C11
47pF
C10
10µF
SYS 35, 36
C9
10µF
RTCPWR 38
Super Cap
SYS
RTCPWR
Motor
5V
VI/O
3.3V
DDRII
1.8V
VCORE
1V
~10k
VI/O
3.3V
RNTC
R16
RISETA 11 ISETA
12 TS
R17
13 VP
C23
0.1µF
R18 10k
Interrupt Flag
1 INT
Wake Up Signal to µP
30 WAKE
BATS
7 BATS
CBATS
0.1µF
VDDM 3
SCL 15
Bypass Cap
1µF
R14 R15
1k 1k
2
VDD_I C
SDA 14
EN1234 24
EN1234 Control
Chip Enable CH1 CH3 CH4
5V 1.8V 1V
GND 41 (Exposed Pad)
CH2
3.3V
DS5002-00 November 2011
www.richtek.com
3







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)