RP154x SERIES
300mA SMALL DUAL LDO REGULATOR
NO. EA-202-111020
OUTLINE
The RP154x 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 short current limit circuit, a chip enable
circuit, and so on.
These ICs perform with low dropout voltage due to built-in transistor with low ON resistance. Low supply
current and a chip enable function prolongs the battery life of each system. The ripple rejection, line transient
response and load transient response of the RP154x 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. Since the packages for these ICs are SOT-23-6 and
DFN1216-8, and dual LDO regulators are included in each package, high density mounting of the ICs on boards
is possible.
FEATURES
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Supply Current ..................................................................... Typ. 50μA×2 (VR1&VR2)
Standby Current ................................................................... Typ. 0.1μA×2 (VR1&VR2)
Input Voltage Range............................................................. 1.4V to 5.25V
Output Voltage Range.......................................................... 0.8V to 3.6V (0.1V steps)
(
For details, please refer to MARK INFORMATIONS.)
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. 0.24V (I
OUT
=300mA,
V
OUT
=2.5V)
Ripple Rejection ................................................................... Typ. 70dB (f=1kHz)
Line Regulation .................................................................... Typ. 0.02%/V
Packages ............................................................................ DFN1216-8, SOT-23-6
Built-in Fold Back Protection Circuit..................................... Typ. 60mA (Current at short mode)
Ceramic capacitors are recommended to be used with this IC .... 1.0μF 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
RP154x
SELECTION GUIDE
The output voltage, auto discharge function, and package, etc. for the ICs can be selected at the user’s
request.
Product Name
RP154Lxxx∗-E2
RP154Nxxx∗-TR-FE
Package
DFN1216-8
SOT-23-6
Quantity per Reel
5,000 pcs
3,000 pcs
Pb Free
Yes
Yes
Halogen Free
Yes
Yes
xxx: The combination of output voltage for each channel can be designated by serial numbers. (from 001)
The output voltage for each channel can be set in the range from 0.8V to 3.6V in 0.1V steps.
(For details, please refer to MARK INFORMATIONS.)
∗
: The auto discharge function at off state are options as follows.
(A) without auto-discharge function at off state
(B) with auto-discharge function at off state
PIN CONFIGURATIONS
•
DFN1216-8
Top View
8
7
6
5
•
SOT-23-6
Bottom View
5
6
7
8
6
5
4
∗1
(mark side)
1
2
3
4
4
3
2
1
1
2
3
PIN DESCRIPTIONS
•
DFN1216-8
Pin No.
1
2
3
4
5
6
7
8
Symbol
GND
V
OUT1
V
OUT2
GND
CE2
V
DD2
V
DD1
CE1
Ground Pin
∗2
Description
Output Pin 1
Output Pin 2
Ground Pin
Input Pin
Input Pin
Chip Enable Pin 1 ("H" Active)
∗2
Chip Enable Pin 2 ("H" Active)
∗1)
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.
∗2)
The GND pin must be wired together when it is mounted on board.
4
RP154x
•
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)
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 (DFN1216-8)
Power Dissipation (SOT-23-6)
Storage Temperature Range
∗
∗
Item
Rating
6.0
−0.3
to 6.0
−0.3
to V
IN
+0.3
400
625
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
Embedded System
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