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PDF RT5014 Data sheet ( Hoja de datos )
| Número de pieza | RT5014 | |
| Descripción | 7+6 Channels Power Management IC | |
| Fabricantes | Richtek | |
| Logotipo |  |
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®
RT5014
7+6 Channels Power Management IC for DSC
General Description
The RT5014 is a complete power supply solution for digital
still cameras and other hand held devices. The RT5014 is
a multi-channel DC/DC power management unit including
one synchronous step-up DC/DC converter with load
disconnect (CH1), one selectable synchronous step-up/
step-down DC/DC converter (CH2), two synchronous step-
down DC/DC converters (CH3/4), one synchronous high
voltage step-up DC/DC converter (CH5), one asynchronous
inverting DC/DC converter (CH6) and one WLED driver in
synchronous high voltage step-up mode or current
regulator mode (CH7). Besides, the RT5014 also includes
six LDO regulators: one RTC_LDO, one High Voltage LDO
for CCD+ bias power (CH8), one high PSRR LDO for AFE
power (CH9), and three generic LDOs (CH10 to CH12).
All P-MOSFETs are integrated and all frequency
compensation network needed by DC/DC converters are
built-in. RT5014 uses one sequence selection pin SEQ
to select five preset sequences and uses I2C control
interface to enable channels and adjust CH1/5/6/8/9/10/
11/12 output voltage level and WLED dimming ratio and
OVP threshold. RT5014 also includes a system reset
function to monitor battery voltage.
The RT5014 is designed to fulfill the applications for DSC
as follows : CH1 is a synchronous step-up output for motor
power. CH2 is a selectable synchronous step-up/step-
down output for system I/O power. The operation mode is
auto-selected by detecting external components topology.
CH3 and CH4 are synchronous step-down outputs for DSP
core and memory power supply. CH5 and CH8 HVLDO
are for CCD+ bias power supply. CH6 is an asynchronous
inverting output for negative CCD− bias power supply. CH7
is a WLED driver, auto-selected to be in synchronous high
voltage step-up mode or current regulator mode.
Besides switching converters, RT5014 has some LDO
regulators : CH9 is a LDO for AFE power. CH10 is 3.1V
LDO for system, enabled in the preset power sequence.
CH11 is a LDO enabled via I2C i/f for memory card and
supports Dynamic Voltage Scaling function. CH12 is a
LDO for memory card or PLL. CH10 default voltage and
enabling are controlled in power sequence selected by
pin SEQ. And one keep-alive 3.3V LDO for RTC power
supply.
The RT5014 provides over current protection, thermal
shutdown protection, over voltage protection, over load
protection and under voltage protection to achieve complete
protection.
The RT5014 is available in the WQFN-40L 5x5 package.
Simplified Application Circuit
Battery
Chip Enable
I2C Control
RT5014
BAT
VOUT1
LX2
LX3
LX4
EN PVD5
VOUT6
PVD7
SCL
LDOH
SDA
VOA
VOD1
VOD2
GND
VOM
VRTC
Step-Up For Motor
Step-Up/Down for I/O
Step-Down for Core
Step-Down for DDR III
HV Step-Up for CCD
HV Inverting for CCD
Step-Up for LED Backlight
HV LDO
LDO for AFE
LDO for System
LDO with DVS
LDO for Digital
LDO for RTC
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS5014-01 March 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
Function Block Diagram
VDDM
VIH
LDOH
FBH
PVD5
LX5
VRTC
SYSR
SCL
SDA
EN
SEQ
PVD7
LX7
FB7
BAT
LX6
VOUT6
FB6
VREF
VNEG
BAT
+
VREF
+ DAC
-
CH8 HVLDO
Body
Diode
Control
PVD5
BAT
UVLO & OVP
UVLO
SS
VDDM
VDDM
VDDI
CH1 C-Mode
Sync. LV
Step-Up
CH5 HV
C-Mode
Sync.
Step-Up
-
+
VREF + DAC
-
+
VREF + DAC
VDDI
RTC_LDO 3.3V w/
Body Diode Control
VRTC
VRTC
System Reset BAT
VDDM
I2C Control Interface
(Fast Mode up to 400kb/s)
VDDM
CH2
Mode
Selector
CH2 HV
C-Mode
Step-Up
or Step-Down
VDDM
Body
Diode
Control
BAT
-
+
0.8V
REF
CH3 C-Mode
Step-Down
Enable Sequence Control
VDDM
-
+
Body
BAT Diode
Control
CH7 HV C-Mode
Sync. Step-Up +
Current Regulator
+ Mode Selector
(32 Steps
Dimming)
-
+
VREF + DAC
VNEG
CH6 HV C-Mode
Async. Inverting
Regulator
VREG =
BAT – 4.5V
VDDM
CH4 C-Mode
Step-Down
0.8V
REF
-
+
0.8V
VDDM REF
CH9 LDO (for
AFE)
VDDM
0.4
VREF
+
-
VREF + DAC
Register File
Ch1/5/6/8/9/10/11/12
Output Voltage,
Enable (Ch5, CH6,
CH7, Ch8, Ch9,
CH11, Ch12)
CH7 Dim. Ratio,
CH7 OVP Threshold
CH10 LDO 3.1V
VDDM
CH11
LDO with DVS
VDDM
VID
CH12
LDO (for Digital)
RT5014
PVD1
LX1
VOUT1
GND
PVD2
LX2
FB2
PVD3
LX3
FB3
PVD4
LX4
FB4
VIA
VOA
VID
VOD1
VOD2
VIM
VOM
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS5014-01 March 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
RT5014
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Under Voltage Protection at FB6
0.7 0.8 0.9 V
Over Load Protection at FB6
-- 0.55 -- V
Off Discharge Current at VOUT6
Discharge Finishing Threshold at
VOUT6
CH7 WLED Driver
VOUT6 = −7V
-- 20 --
-- −0.12 --
mA
V
Feedback Regulation Voltage at FB7
(Both Step-Up and Current)
A0.DIM7 [4:0] = 5’b11111
0.237 0.25 0.263 V
Minimum On-Time for PSM (Step-Up)
Maximum Duty Cycle (Step-Up
Mode)
On-Resistance of MOSFET
Current Limit (Step-Up Mode)
Over Voltage Protection at PVD7
(Step-Up Mode)
VFB7 = 0.15V
P-MOSFET, VPVD7 = 10V
N-MOSFET, VVDDM = 3.3V
N-MOSFET, VVDDM = 3.3V
A0.OVP7 [1:0] = 2’b00
A0.OVP7 [1:0] = 2’b01
A0.OVP7 [1:0] = 2’b1X
-- 300 -- ns
91 93 97 %
-- 2 3
-- 0.9 1.1
0.6 0.8 1
8.3 9 10
14.2 15 16
24.5 25.5 26.5
Ω
A
V
Off Discharge Current at PVD7
(Step-Up Mode)
VPVD7 = 10V, VVDDM = 3.3V
-- 20 -- mA
Discharge Finishing Threshold at
PVD7
(Step-Up Mode)
--
BAT
− 0.2
--
V
CH9 LDO
Input Voltage Range (VIA)
2.7 -- 5.5 V
Quiescent Current into VIA
Regulation Voltage VOA
VVIA = 3.3V, IOUT = 0mA
VVIA = 3.3V, IOUT = 0mA,
A3.VOA [2:0] = 3’b001
-- -- 75 μA
3.054 3.1 3.146 V
Dropout Voltage (VIA − VOA)
Load Transient Output Voltage drop
at VOA
PSRR+
Under Voltage Protection at VOA
Maximum Output Current
(Current Limit)
IOUT = 100mA, VVOA = 3.1V
-- -- 0.1
VVOA = 3.1V, Load current step
from 10mA to 100mA, COUT = 1μF
--
-- 10
IOUT = 10mA, VVIA = 3.3V,
VVOA = 3.1V at 1kHz
-- −60 --
Target voltage defined at A3.VOA
--
Target
x 0.5
--
VVIA = 3.3V, VVOA = 3.1V
400 550 700
V
mV
dB
V
mA
Off Discharge Current at VOA
CH10 LDO
VVDDM = 3.3V
-- -- 10 mA
Input Voltage Range (VID)
2.7 -- 5.5 V
Quiescent Current into VID
VVID = 3.3V, IOUT = 0mA
-- -- 75 μA
Regulation Voltage VOA
A3.VOA [2:0] = 3’b000 to 3’b011
A3.VOA [2:0] = 3’b100 to 3’b111
−1.5
−2
--
--
1.5
%
2
Dropout Voltage (VID − VOD1)
PSRR+
IOUT = 100mA, VVOD1 = 3.1V
IOUT = 10mA, VVID = 3.3V at 1kHz
--
--
-- 0.1 V
−40 -- dB
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS5014-01 March 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet RT5014.PDF ] | |
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