RP152x SERIES
150mA DUAL LDO REGULATOR WITH SEQUENCE CONTROL
NO. EA-200-090729
OUTLINE
The RP152x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply
current, low dropout, and high ripple rejection. Each of these voltage regulator ICs consists of a voltage
reference unit, an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable
circuit. Moreover, in C Version of RP152x, the start-up sequence circuit is built-in.
These ICs perform with low dropout voltage due to built-in transistor with low ON resistance, and a chip
enable function prolongs the battery life of each system. The line transient response and load transient
response of the RP152x Series are excellent, thus these ICs are very suitable for the power supply for
hand-held communication equipment.
The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are
SOT-23-6 and DFN1212-6, dual LDO regulators are included in each package are high density mounting of the
ICs on boards is possible.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
Supply Current ..................................................................... Typ. 40μA×2 (VR1&VR2)
Standby Current ................................................................... Typ. 0.1μA×2 (VR1&VR2)
Ripple Rejection ................................................................... Typ. 70dB (f=1kHz)
Input Voltage Range............................................................. 1.4V to 5.25V
Output Voltage Range.......................................................... 0.8V to 3.6V
Output Voltage Accuracy......................................................±1.0% (V
OUT
>2.0V, T
opt
=25°C)
Temperature-Drift Coefficient of Output Voltage .................. Typ.
±80ppm/°C
Dropout Voltage.................................................................... Typ. 0.22V (I
OUT
=150mA,
V
OUT
=2.8V)
Line Regulation .................................................................... Typ. 0.02%/V
Packages ............................................................................ DFN1212-6, SOT-23-6
Built-in Fold Back Protection Circuit..................................... Typ. 40mA
Ceramic capacitors are recommended to be used with this IC .... 0.22μF or more
APPLICATIONS
•
Power source for portable communication equipment.
•
Power source for electrical appliances such as cameras, VCRs and camcorders.
•
Power source for battery-powered equipment.
1
RP152x
SELECTION GUIDE
The output voltage, auto discharge function*, and the taping type for the ICs can be selected at the user's
request.
The selection can be made with designating the part number as shown below;
RP152xxxxx-xx -x
←Part
Number
↑ ↑ ↑ ↑ ↑
a b c d e
Code
a
Contents
Designation of Package Type:
L: DFN1212-6
N: SOT-23-6
Setting combination of 2ch Output Voltage (V
OUT
):
Serial Number for Voltage setting from 001,
Stepwise setting in the range of 0.8V to 3.6V is possible for each channel.
Designation of Mask Option:
∗
A: without auto discharge function at OFF state.
∗
B: with auto discharge function at OFF state
C: The start-up sequence function with auto-discharge*
Designation of Taping Type:
Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
Designation of composition of plating:
-F : Lead free plating (SOT-23-6)
None : Pd plating (DFN1212-6)
b
c
d
e
∗)
When the mode is into standby with CE signal, auto discharge transistor turns on, and it makes the turn-off
speed faster than normal type.
3
RP152x
PIN CONFIGURATIONS
•
DFN1212-6
∗
Top View
6
5
4
•
SOT-23-6
Bottom View
4
5
6
6
5
4
(mark side)
1
2
3
3
2
1
1
2
3
PIN DESCRIPTIONS
•
DFN1212-6*
Pin No.
1
2
3
4
5
6
Symbol
V
OUT1
V
OUT2
GND
CE2
V
DD
CE1
Output Pin 1
Output Pin 2
Ground Pin
Chip Enable Pin 2 (“H” Active)
Input Pin
Chip Enable Pin 1 (“H” Active)
Description
∗)
Tab is GND level. (They are connected to the reverse side of this IC.)
The tab is better to be connected to the GND, but leaving it open is also acceptable.
•
SOT-23-6
Pin No.
1
2
3
4
5
6
Symbol
CE1
V
DD
CE2
V
OUT2
GND
V
OUT1
Input Pin
Chip Enable Pin 2 (“H” Active)
Output Pin 2
Ground Pin
Output Pin 1
Description
Chip Enable Pin 1 (“H” Active)
4
RP152x
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT1
, V
OUT2
I
OUT1
, I
OUT2
P
D
T
opt
T
stg
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current
Power Dissipation (DFN1212-6)
Power Dissipation (SOT-23-6)
Storage Temperature Range
∗
∗
Item
Rating
6.0
−0.3
to 6.0
−0.3
to V
IN
+0.3
180
600
420
−40
to 85
−55
to 125
Unit
V
V
V
mA
mW
°C
°C
Operating Temperature Range
∗)
For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field. The functional operation at or over these absolute maximum ratings is not assured.
5
PCB Design
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