RP152x Series
150 mA Low Voltage Dual-Channel LDO Regulator with Sequence Control
NO.EA-200-160707
OUTLINE
The RP152x is a 150 mA dual-channel LDO regulator that provides high ripple rejection, low dropout voltage,
high output voltage accuracy, and low supply current. Internally, the RP152x consists of a voltage reference
unit, an error amplifier, resistors for setting output voltage, a short current limit circuit, and a chip enable circuit.
Moreover, the RP152xxxxC consists of a start-up sequence circuit.
The RP152x is available in fixed output voltage options. Besides the low supply current by CMOS, the RP152x
offers a low dropout voltage by built-in low ON resistance Tr. as well as an extended battery life by a chip
enable function. Compared with the existing CMOS-based regulators, the RP152x is further improved in ripple
rejection, line transient response, and load transient response. All these features allow the RP152x to become
ideal power sources for hand-held communication equipment.
The RP152x is offered in a 6-pin SOT-23-6 package and a 6-pin DFN1212-6 package. Both packages are
equipped with two LDOs which can achieve high-density mounting.
FEATURES
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Supply Current ························································ Typ. 40 µA x 2
Standby Current ······················································ Typ. 0.1µA x 2
Ripple Rejection ······················································ Typ. 70 dB, f = 1 kHz
Input Voltage Range ················································· 1.4 V to 5.25 V
Output Voltage Range··············································· 0.8 V to 3.6 V, 0.1 V step
Output Voltage Accuracy ··········································· ±1.0%, V
SET
> 2.0 V, Ta = 25°C
Temperature-Drift Coefficient of Output Voltage ·············· Typ. ±80 ppm/°C
Dropout Voltage······················································· Typ. 0.20 V, I
OUT
= 150 mA, V
SET
= 2.8 V
Line Regulation ······················································· Typ. 0.02%/ V
Packages ······························································· DFN1212-6, SOT-23-6
Short-current Limit ··················································· Typ. 40 mA
Ceramic Capacitor Compatible ··································· 0.22 µF or more
APPLICATIONS
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Battery-powered Equipment
Portable Communication Equipment, Cameras
Home Electrical Appliances
1
RP152x
NO.EA-200-160707
SELECTION GUIDE
The set output voltage, the package type, the auto-discharge function
1
and the start-up sequence control are
user-selectable options.
Selection Guide
Product Name
RP152Lxxx∗-TR
RP152Nxxx∗-TR-FE
Package
DFN1212-6
SOT-23-6
Quantity per Reel
5,000 pcs
3,000 pcs
Pb Free
Yes
Yes
Halogen Free
Yes
Yes
xxx: Specify the combination of set output voltage (V
SET
) within the range of 0.8 V to 3.6 V in 0.1 V step.
∗:
Specify the auto-discharge function and the start-up sequence control.
(A) Auto-discharge function not included
(B) Auto-discharge function included
(C) Start-up sequence control and Auto-discharge function included
Auto-discharge function quickly lowers the output voltage to 0 V by releasing the electrical charge accumulated in the
external capacitor when the chip enable signal is switched from the active mode to the standby mode.
1
2
RP152x
NO.EA-200-160707
BLOCK DIAGRAMS
CE1
VOUT1
CE1
VOUT1
Error Amp.
Vref
Current Limit
VDD
R1_1
Error Amp.
Vref
R1_1
R2_1
Current Limit
R2_1
GND
VDD
GND
R1_2
Error Amp.
Vref
Current Limit
CE2
VOUT2
CE2
Error Amp.
Vref
Current Limit
R1_2
R2_2
R2_2
VOUT2
RP152xxxxA Block Diagram
RP152xxxxB Block Diagram
CE1
VOUT1
Error Amp.
Vref
Current Limit
VDD
R1_1
R2_1
GND
R1_2
100µs
Delay
Error Amp.
Vref
Current Limit
CE2
VOUT2
R2_2
RP152xxxxC Block Diagram
3
RP152x
NO.EA-200-160707
PIN DESCRIPTIONS
Top View
6
5
4
Bottom View
4
5
6
6
5
4
∗
(mark side)
1
2
3
3
2
1
1
2
3
DFN1212-6 Pin Configuration
SOT-23-6 Pin Configuration
DFN1212-6 Pin Description
Pin No.
Symbol
1
2
3
4
5
6
VOUT1
VOUT2
GND
CE2
VDD
CE1
Output Pin 1
Output Pin2
Ground Pin
Description
Chip Enable Pin 2, Active-high
Input Pin
Chip Enable Pin 1, Active-high
∗
The tab on the bottom of the package enhances thermal performance and is electrically connected to GND (substrate
level). It is recommended that the tab be connected to the ground plane on the board, or otherwise be left floating.
SOT-23-6 Pin Description
Pin No.
Symbol
1
2
3
4
5
6
CE1
VDD
CE2
VOUT2
GND
VOUT1
Description
Chip Enable Pin 1, Active-high
Input Pin
Chip Enable Pin 2, Active-high
Output Pin2
Ground Pin
Output Pin 1
4
RP152x
NO.EA-200-160707
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings
Symbol
V
IN
V
CE
V
OUT1
V
OUT2
I
OUT1
I
OUT2
P
D
Tj
Tstg
Input Voltage
CE Pin Input Voltage
Output Voltage
Output Current
Power Dissipation (Standard Land Pattern)
1
Junction Temperature
Storage Temperature Range
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.
Item
Rating
−0.3 to 6.0
−0.3 to 6.0
−0.3 to V
IN
+0.3
180
DFN1212-6
SOT-23-6
−40 to 125
−55 to 125
600
Unit
V
V
V
mA
mW
420
°C
°C
RECOMMENDED OPERATING CONDITIONS
Recommended Operating Conditions
Symbol
Item
V
IN
Ta
Input Voltage
2
Operating Temperature Range
Rating
1.40 to 5.25
−40 to 85
Unit
V
°C
RECOMMENDED OPERATING CONDITIONS
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the recommended
operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the
semiconductor devices may receive serious damage when they continue to operate over the recommended operating
conditions.
1
2
Refer to
POWER DISSIPATION
in
SUPPLEMENTARY ITEMS
for detailed information.
In case of operating the device beyond 5.25 V, do not exceed 5.5 V with 500 total operating hours.
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