DC/DC PMU. RT5002C Datasheet

RT5002C PMU. Datasheet pdf. Equivalent

RT5002C Datasheet
Recommendation RT5002C Datasheet
Part RT5002C
Description 7 + 1 Channel DC/DC PMU
Feature RT5002C; ® RT5002C 7 + 1 Channel DC/DC PMU with Li-Ion Battery Charger for DSC General Description The RT50.
Manufacture Richtek
Datasheet
Download RT5002C Datasheet




Richtek RT5002C
®
RT5002C
7 + 1 Channel DC/DC PMU with Li-Ion Battery Charger for DSC
General Description
The RT5002C 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.
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)
Three Preset On/Off Sequences of CH5, CH6 (5 6,
6 5, and 5/6 at the same time)
Simplified Application Circuit
Input Power
Chip Enable
I2C Control
VIN SYS
RT5002C
PVD1
LX2
EN1234
LX3
LX4
PVD5
SCL
SDA
VOUT6
PVD7
RTCPWR
GND BAT
System Power
Step-Up For Motor
Step-Up/Down for I/O
Step-Down for DDR II
Step-Down for Core
HV Step-Up for CCD
HV Inverting for CCD
Step-Up for LED Backlight
LDO for RTC
Battery
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS5002C-00 January 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1



Richtek RT5002C
RT5002C
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
Charge Status Indicator
Optimized Charge Rate via Thermal Feedback
Interrupt Indicator to Fault/Status Events
I2C Control Interface : Support Fast Mode up to
400kb/s
Small 40-Lead WQFN Package
RoHS Compliant and Halogen Free
Ordering Information
RT5002C
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
RT5002C
ZQW
YMDNN
RT5002CZQW : Product Number
YMDNN : Date Code
Applications
DSC
Pin Configurations
(TOP VIEW)
40 39 38 37 36 35 34 33 32 31
INT 1
30
FB1 2
29
VDDM 3
28
FB7 4
27
PVD7 5
LX7 6
GND
26
25
CHG 7
24
LX4 8
PVD4 9
23
41
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
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS5002C-00 January 2013



Richtek RT5002C
RT5002C
Functional Pin Description
Pin No.
1
Pin Name
INT
Pin Function
Interrupt Indicator Open Drain Output. If any toggle events of TS_FAULT, PGOOD,
EOC, NoBAT, or SAFE happen, the output INT goes low. After I2C register bank
address 0x2 is read or power on reset, INT goes high.
2 FB1 Feedback Input of CH1.
3
VDDM
IC Analog Power Pin.
4
FB7
Feedback Input of CH7 in Step-Up Mode or Current Sink Pin of CH7 in Current
Source Mode.
5
PVD7
Power Output of CH7.
6 LX7 Switch Node of CH7 in Step-Up Mode.
7
CHG
Charger Status Output. Open-drain output.
8 LX4 Switch Node of CH4.
9
PVD4
Power Input of CH4.
10 FB4
Feedback Input of CH4.
11
ISETA
Charge Current Set Input. Connect a resistor (RISETA) between ISETA and GND.
Temperature Sense Input. The TS pin connects to a battery’s thermistor to
12 TS
determine whether the battery is too hot or too cold to be charged. If the battery’s
temperature is out of range, charging is paused until it re-enters the valid range.
TS also detects whether the battery (with NTC) is present or not.
13 VP
14 SDA
Power Output of 3.3V Buffer for Battery Temperature Sensing.
Data Signal Pin of I2C Interface.
15 SCL
Clock Signal Pin of I2C Interface.
16
PVD6
Power Input of CH6.
17 LX6
Switch Node of CH6.
18 VOUT6 Sense Input of CH6 Inverting Output Node.
19 FB6
Feedback Input of CH6.
20
VREF
1.8V Reference Output.
21 FB3
Feedback Input of CH3.
22
PVD3
Power Input of CH3.
23 LX3
Switch Node of CH3.
24 EN1234 Enable Pin of CH1, CH2, CH3, and CH4.
25 FB5
Feedback Input of CH5.
26
PVD5
Power Output of CH5.
27 LX5
Switch Node of CH5.
Input Pin to Select Temperature Sensing Thresholds. Thresholds of TSSEL = H are
28
TSSEL
60% and 38% of VP voltage. Thresholds of TSSEL = L are 74% and 28% of VP
voltage.
29 FB2
Feedback Input of CH2.
30
WAKE
Wake-Up Impulse Push-Pull Output. If VIN or BAT plugs in, WAKE pin generates
one 90ms width high pulse to notify micro processor.
31 LX2
Switch Node of CH2.
32
PVD2
Power Input of CH2.
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS5002C-00 January 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3







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