RAA23012x RAA23013x
Datasheet
RAA23012x RAA23013x
16V Input, 3A, Step-Down DC/DC Converter
+ Battery Backup
Description
The RAA23012x and RAA23013x are 1CH step-down DC/DC converter, 4.5V to 16V input voltage rage and 3A
output current. Auto PFM mode makes devices low power operation at light load, so it makes a system lower
power.
The RAA23012x is suitable for battery backup system using lithium primary cell with built-in battery backup
circuit.
R18DS0015EJ0100
REV.1.00
Apr.15.2015
Features
DC/DC
Synchronous rectification type step-down DC/DC
Auto PFM mode
Battery backup circuit (RAA23012x)
Input voltage range
4.5V to 16V
Output voltage range
0.8V to 6V
Maximum output current
3A
Shutdown current
1uA (typ.)
Switching frequency
1.1MHz (fixed)
Soft start
2ms (fixed)
Integrated power MOSFETs
Discharge circuit
Internal phase compensator
Protection circuit
Short circuit protection (latch type)
Thermal shutdown circuit
165
°C
(typ.)
Under voltage lockout circuit (recovery type)
Package
16-pin HTSSOP (RAA23012x)
8-pin HLSOP (RAA23013x)
Application
Communication (Router, Home Gate Way, Radio, etc.)
Industrial (Surveillance camera, Various controller, etc.)
Building (Security device, Emergency device, Various controller, etc.)
OA (Printer, Plane paper copier, etc.)
Smart meter
Smart home appliances
And, usable various application
Note: The information contained in this document is being issued in advance of the production cycle for the product.
The parameters for the product may change before final production, or Renesas Electronics Corporation, at its
own discretion, may withdraw the product prior to its production.
A quality grade of RAA23012x series is “Standard”. Recommended applications are indicated below.
Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment, and industrial robots, etc.
R18DS0015EJ0100 REV.1.00
Apr.15.2015
Page 1 of 26
RAA23012x RAA23013x
Product Lineup Table
Part
number
RAA230121
RAA230122
RAA230123
RAA230131
RAA230132
RAA230133
Note
Output
1
1
1
1
1
1
Type
Step-down + BB
*1
Step-down + BB
*1
Step-down + BB
*1
Step-down
Step-down
Step-down
VIN
range
4.5 to 16V
4.5 to 16V
4.5 to 16V
4.5 to 16V
4.5 to 16V
4.5 to 16V
VOUT
3.3V(fixed)
5.0V(fixed)
0.8V to 6.0V
*2
3.3V(fixed)
5.0V(fixed)
0.8V to 6.0V
*2
IOUT
(max.)
3A
3A
3A
3A
3A
3A
Package
16pin HTSSOP
16pin HTSSOP
16pin HTSSOP
8pin HLSOP
8pin HLSOP
8pin HLSOP
Switching
frequency
1.1MHz
1.1MHz
1.1MHz
1.1MHz
1.1MHz
1.1MHz
*1 BB : Battery Backup
*2 Adjustable by external resistors
Circuit example
RAA23012x (1CHDCDC + Battery Backup, VOUT set by external resistors)
RAA23013x (1CHDCDC, VOUT set by external resistors)
R18DS0015EJ0100 REV.1.00
Apr.15.2015
Page 2 of 26
RAA23012x RAA23013x
Block Diagram
RAA23012x (1CHDCDC + Battery backup, VOUT set by external resistors)
R18DS0015EJ0100 REV.1.00
Apr.15.2015
Page 3 of 26
RAA23012x RAA23013x
RAA23013x (1CHDCDC, VOUT set by external resistors)
R18DS0015EJ0100 REV.1.00
Apr.15.2015
Page 4 of 26
RAA23012x RAA23013x
Pin Function
RAA23012x (1CHDCDC + Battery backup)
Pin No.
1
2
3
4
5
Symbol
VOUT
FB
VBB_IN
VBB_OUT
EN
I/O
I
I
I
O
I
Function
VOUT feedback
Feedback resistor connection
Battery connection
Backup voltage output
Device enable
EN=“L”
: Disable (shutdown)
EN=”H”
: Enable (operation)
Auto PFM mode ON/OFF
x_AutoPFM=”L” : Auto PFM mode (change automatically)
PFM mode at light load
PWM mode at heavy load
x_AutoPFM=“H” : PWM mode (fixed)
Internal power supply output
(Connect 1uF capacitor between VREG and GND)
Ground
Ground
Ground
Ground
Inductor connection
Boot strap input (Connect 0.1uF capacitor between LX and Boost)
Power supply
Ground
Ground
6
x_AutoPFM
I
7
8
9
10
11
12
13
14
15
16
VREG
GND
GND
GND
GND
LX
Boost
VIN
GND
GND
O
I/O
I/O
I/O
I/O
O
I
I
I/O
I/O
RAA23013x (1CHDCDC)
Pin No.
1
2
3
Symbol
VOUT
FB
VREG
I/O
I
I
O
Function
VOUT feedback
Feedback resistor connection
Internal power supply output
(Connect 1uF capacitor between VREG and GND)
Device enable
EN=“L”
: Disable (shutdown)
EN=”H”
: Enable (operation)
Ground
Inductor connection
Boot strap input (Connect 0.1uF capacitor between LX and Boost)
Power supply
4
5
6
7
8
EN
GND
LX
Boost
VIN
I
I/O
O
I
I
R18DS0015EJ0100 REV.1.00
Apr.15.2015
Page 5 of 26
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