|
|
PDF RT5035A Data sheet ( Hoja de datos )
| Número de pieza | RT5035A | |
| Descripción | 7+3 Channel DC/DC Converters | |
| Fabricantes | Richtek | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de RT5035A (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
RT5035A/B
7+3 Channel DC/DC Converters with RTC and I2C Interface
General Description
RT5035A/B is a highly-integrated DSC Power
Management IC that contains 7ch switching DC/DC
converters and two generic LDOs, one keep-alive
low-quiescent LDO for RTC, one load switch with
soft-start control and current limit, a switch with reverse
leakage prevention for backup battery, and a
Real-Time-Clock (RTC) including time counter and
32768Hz oscillator. The DC/DC converters are one
low-voltage Step-Up operated in either Async-PFM or
Sync-PWM, one current mode Sync Step-Up/Down
(Buck-Boost), four Sync Step-Down, and one Asyn
Step-Up for WLED driver. All power MOS are
integrated. And compensation networks are built in.
RT5035A/B uses I2C interface to set power-on and
power-off timing, output voltage, and WLED current
and dimming level, and also access RTC time counters
and oscillator fine-tuning. RT5035A/B dedicate for
CMOS image sensor application by providing one Sync
Step-Down, one LDO, and one load switch. The
RT5035A/B also provides rich protection functions
include Over-Current Protection, Under-Voltage
Protection, Over-Voltage Protection, Over-
Temperature Protection, and Over-Load Protection.
RT5035A/B is available in WQFN-40L 5x5 package.
Applications
Digital Cameras
Portable Instruments
Features
CH1 Sync Step-Up in PWM Mode or Async
Step-Up in Pulse Frequency Mode
CH2 Current Mode Sync Step-Up/Down
CH3/CH4/CH5 Current Mode Sync Step-Down
SW4 Load Switch with Soft-Start Inrush Control
And Current Limit
CH6 Generic Low Voltage LDO for CMOS Sensor
CH7 WLED Driver in Async Step-Up Mode
Open LED Protection
32 Dimming Levels
CH8 Generic Low Voltage LDO for Multiple
Purpose Power Supply
CH9 Keep-Alive Low-Quiescent LDO
CH10 Sync Step-Down or Async Step-down in
Pulse Frequency Mode for Memory Standby
Mode Application
LV Sync Step-Down DC/DC Converter High
Efficiency Up to 95%
100% (max) Duty Cycle for CH3, CH4, CH5 &CH10
I2C Control Interface to Program Enable, Power
On/Off Delay Time, Output Regulated Voltage,
WLED Dimming Current
RTC Timer And Oscillator
Fixed 2MHz Switching Frequency for CH1, CH3,
CH4, CH5, CH10
Fixed 1MHz Switching Frequency for CH2, CH7
Simplified Application Circuit
I2C Control
RT5035A/B
BAT VOUT1
VOUT2
VDDM
VOUT3
VOUT4
SCL
SDA
C32K
EN
SYNC
RESET
SWO
VOUT5
VOUT6
LX7
VOUT8
RTCPWR
VOUT10
GND
Step-Up for Motor
Step-Up/Down for I/O
Step-Down for Core
Step-Down for CMOS
Load Switch for CMOS
Step-Down for CMOS
LDO for CMOS
Step-Up for LED Backlight
LDO for HDMI
LDO for RTC
Step-Down for Memory
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
DS5035A/B-01 April 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
RT5035A/B
Functional Block Diagram
BAT
PVDD5
LX5
VOUT5/FB5
PVDD6
VOUT6
LX7
FB7
PVDD8
VOUT8
LX10
VOUT10/FB10
SCL
SDA
VDDM
RESET
RTCPWR
XIN
XOUT
RTCGND
C32K
GND
VDDM
CH5
LV C-Mode
Sync.
Step-Down
VDDM VOUT1
BAT UVLO
2.6V/2.4V (Part A)
or 1.7V/1.5 (Part B)
CH1
PFM Async.
or
C-Mode Sync.
LV Step-Up
Body
Diode
Control
BAT
VOUT1
VREF &
DAC
-
+
Floating GND
Selection
A9.Bit0
VNEG
VDDM
-
+
VREF & DAC
(W / DVS)
CH6
Generic LDO
-
+
VREF & DAC
VDDM
CH7 (WLED)
HV C-Mode
Async. Step-Up
For 2 to 6WLED
VREF & DAC
+
-
CH8
Generic LDO
CH2
LV C-Mode
Sync.
Step-Up/Down
VNEG
VDDM
-
+
VREF & DAC
CH3
LV C-Mode
Sync.
Step-Down
VOUT1
LX1
PVDD2
LX2A
VOUT2
LX2B
PVDD3
LX3
VOUT3/FB3
VREF & DAC
(W / DVS)
PVDD4/10
-
+
VDDM
CH10
PFM or
LV C-Mode
Sync.
Step-Down
Reg.PFM10
VNEG
VDDM
-
+
VREF & DAC
(W / DVS)
CH4
LV C-Mode
Sync.
Step-Down
-
+
VREF & DAC
(W / DVS)
BAT
VNEG
VDDM
I2C Control Interface
(Fast Mode up to 400kb/s)
VOUT1
VNEG
-
+
VREF & DAC
(W / DVS)
VDDM
SW4 Control
Body
Diode
Control
RESET
2.4V/2.2V
VM Max (BAT, VOUT1)
VOUT1
CH9 LDO
Keep Alive
Always On
3.1V
Register File
Output Voltage,
Power On/Off
Sequence Control,
Reverse Leakage
Control
Delay time,
WLED dim. Ratio,
CH7 OVP
Threshold
32bits Memory
Charge
Pump for SW
Chip Enable
Sequence
Selection
PLL
VDDM BAT
RTC + OSC+
VDDM
Base Controller
POR/OSC/UVP/
OVP/OCP/OTP
VNEG
Charge Pump
VNEG = BAT-4.5V
PVDD4/10
LX4
VOUT4/SWI
SWO
EN
SEQ
SYNC
CP
CN
VNEG
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
DS5035A/B-01 April 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
RT5035A/B
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Thermal Protection
Thermal Shutdown
TSD
125 160 -- °C
Thermal Shutdown Hysteresis TSD
-- 20 -- °C
VNEG Charge Pump
Charge Pump Low Threshold to
Start
Charge Pump Hysteresis gap to
Stop
(BAT-VNEG) Clamp Level
NVst
NVst
Monitor BAT falling
3.4 3.6 3.8 V
0.1 0.2 0.3 V
4.1 4.5 4.9 V
CH8 LDO
Supply Voltage of Ch8
PVDD8
2.7 -- 5.5 V
PSRR+ of Ch8
1kHz, IO = 10mA, PVDD8 = 3.6V,
VOUT8 = 3.4V
--
60
--
dB
Ch8 Dropout Voltage
VOUT8 = 3.4V, IO = 100mA
-- 40 60 mV
Current Limit of Ch8
ILIM_8
VOUT8 = 3.4V
220 300 380 mA
CH9 Keep-Alive LDO
Supply Voltage of CH9 at VOUT1
Pin
2.4 -- 5.5 V
PSRR+ of CH9
1kHz, IO = 1mA, VDDM = 3.1V
-- 40 -- dB
CH9 Dropout Voltage
Current Limit of RTC LDO
RESET Hysteresis Low
RESET Hysteresis High
RESET Rising Delay Time
CH9 Quiescent Current
RTC
RTC Operation Voltage
RTC Quiescent Current
(Including RTC_UVLO,
RTC_OSC, and Time Counter)
RTC Clock
RTC Clock Accuracy
RTC Clock Output High
RTC Clock Output Low
ILIM_9
VDDM = 3.1V, IO = 20mA
-- 220 300 mV
VDDM = 3.1V
50 100 -- mA
RESET Falling
2.15 2.2 -- V
RESET Rising
-- 2.4 2.45 V
-- -- 0.5 s
Excluding RTC quiescent current -- 10 -- A
1.9 --
RTCPWR > UVLO Threshold XIN
= XOUT = 14pF
--
--
RTCPWR < UVLO Threshold
-- --
-- 32.768
RTCPWR = 1.9V to 3.3V
10 --
Pin C32K Source Out 0.1mA
VDDM
0.3
--
Pin C32K Sink 0.1mA
-- --
3.3
3
0.2
--
10
--
0.3
V
A
A
kHz
ppm
V
V
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
DS5035A/B-01 April 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet RT5035A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RT5035A | 7+3 Channel DC/DC Converters | Richtek |
| RT5035B | 7+3 Channel DC/DC Converters | Richtek |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |