RP151K SERIES
300mA 2ch LDO with VD
NO. EA-132-0607
OUTLINE
The RP151 Series are CMOS-based dual voltage regulator(LDO) ICs equipped with a voltage detector(VD).
LDO function has features of 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.
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
RP151 Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication
equipment.
The output of built-in voltage detector is Nch open drain type.
The output voltage of these ICs is internally fixed with high accuracy(1%). Since the packages for these ICs
are PLP2020-8 package, 2ch LDO regulators and VD are included in each packages, high density mounting of
the ICs on boards is possible.
FEATURES
•
Low Supply Current ............................................................. Typ. 48µA (VR1&VR2)
•
Standby Current ................................................................... Typ. 0.1µA
•
Low Dropout Voltage............................................................ Typ. 0.21V (I
OUT
=300mA,V
OUT
=2.8V)
Typ. 0.24V (I
OUT
=300mA,V
OUT
=2.5V)
•
High Ripple Rejection .......................................................... Typ. 80dB (f=1kHz, V
OUT
=2.5V)
•
Low Temperature-Drift Coefficient of Output Voltage........... Typ.
±30ppm/°C
•
Excellent Line Regulation .................................................... Typ. 0.02%/V
•
High Output Voltage Accuracy .............................................
±1.0%
•
Output Voltage Range.......................................................... 1.5V to 3.3V
•
Small Packages ................................................................. PLP2020-8 (2mm×2mm×t0.6mm)
•
Built-in Fold Back Protection Circuit .................................... Typ. 50mA
•
Ceramic capacitors are recommended to be used with this IC ... C
IN
=C
OUT
=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
RP151K
BLOCK DIAGRAMS
RP151KxxxA (PLP2020-8)
V
OUT1
-
+
R2_1
Current Limit
R1_1
CE1
Error
Amp
Vref
GND
V
DD
-
+
R2_2
Current Limit
R1_2
Error
Amp
Vref
CE2
CE1
CE2
V
OUT2
CD
EN
VD &Delay
GND
D
OUT
SELECTION GUIDE
The output voltage, mask option, 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;
RP151xxxxx-xx-x
←Part
Number
↑ ↑ ↑ ↑ ↑
a bc d e
Code
a
b
c
d
e
Contents
Designation of Package Type:
K: PLP2020-8
setting combination of 2ch Output Voltage (V
OUT
) :
Serial Number for Voltage setting from 001,
Stepwise setting in the range of 1.5V to 3.3V is possible for each channel.
A Version only
Designation of Taping Type:
Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
Designation of composition of pin plating:
None: Au plating (PLP2020-8)
2
RP151K
PIN CONFIGURATIONS
PLP2020-8
8
7
6
5
5
6
7
8
1
2
3
4
4
3
2
1
PIN DESCRIPTIONS
•
RP151K
Pin No.
1
2
3
4
5
6
7
8
Symbol
CE1
GND
CE2
CD
D
OUT
V
OUT2
V
DD
V
OUT1
Chip Enable Pin 1
Ground Pin
Chip Enable Pin 2
Delay Select Input
Power On Reset Output
Output Pin 2
Input Pin
Output Pin 1
Description
* Tab in the
parts have GND level. (They are connected to the reverse side of this IC.)
Do not connect to other wires or land patterns.
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT1
I
OUT2
P
D
Topt
Tstg
∗1
)
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current 1
Output Current 2
Power Dissipation (PLP2020-8)
∗
1
Operating Temperature Range
Storage Temperature Range
Item
Rating
6.0
6.0
−0.3~V
IN
+0.3
400
400
880
−40~85
−55~125
Unit
V
V
V
mA
mA
mW
°C
°C
For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
3
RP151K
ELECTRICAL CHARACTERISTICS
•
RP151KxxxA
V
IN
=Set
V
OUT
+1V
for higher output of the regulator pair,
I
OUT
=1mA,
C
IN
=C
OUT
=1µF,
unless otherwise noted.
VR
Symbol
V
OUT
I
OUT
∆V
OUT
/
∆I
OUT
Item
Output Voltage
Output Current
Load Regulation
1mA
<
=
Topt=25°C
Conditions
(*1)
Min.
×0.99
(−20mV)
300
Typ.
Max.
×1.01
(20mV)
Unit
V
mA
I
OUT
<
=
200mA
<
=
<
=
<
=
<
=
<
=
20
400
340
290
240
210
48
0.1
0.02
40
1000
800
500
380
340
65
3.0
0.10
mV
1.5V
1.7V
V
DIF
Dropout Voltage
I
OUT
=300mA
2.0V
2.5V
2.8V
I
SS
Istandby
∆V
OUT
/
∆V
IN
RR
V
IN
∆V
OUT
/
∆Topt
Ilim
I
PD
V
CEH
V
CEL
en
Supply Current
Supply Current
(Standby)
Line Regulation
I
OUT1
=
I
OUT2
=0mA
V
CE
=0V
Set V
OUT
< 1.7V
Set V
OUT
< 2.0V
Set V
OUT
< 2.5V
Set V
OUT
< 2.8V
Set V
OUT
< 3.3V
mV
µA
µA
%/V
Set V
OUT
+0.5V
<
V
IN
<
5.0V
=
=
<
2.0V,
(In case that V
OUT
=
2.5V
<
V
IN
<
5.0V)
=
=
f=1kHz, Ripple 0.5Vp-p
V
IN
=Set
V
OUT
+1V,I
OUT
=30mA
(In case that V
OUT
<
2.0V, V
IN
=3V)
=
(*2)
−40°C
<
=
Ripple Rejection
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE Pull-down Current
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
80
2.5
5.0
±30
50
0.05
1.5
0.3
0.3
0.6
dB
V
ppm
/°C
mA
µA
V
V
µVrms
Topt
<
=
85°C
V
OUT
=0V
BW=10Hz to 100kHz
30
*1) V
OUT
<
2.0V ±20mV accuracy
=
*2) Max. Input Voltage is 5.5V during 500hours
4
RP151K
VD
Symbol
−V
DET
+V
DET
V
HYS
V
OL
I
DOUT
T
DELAY
Item
Detector Threshold
Released Voltage
Detector Threshold Hysteresis
D
OUT
Output Voltage Low
D
OUT
Output Leakage
Current
Reset Delay Time
C
CD
=0.01µF
6
10
Conditions
% of nominal V
OUT2
% of nominal V
OUT2
% of nominal V
OUT2
I
L
=0.25mA
Min.
90
94.5
3
0.02
0.1
1
14
96
Typ.
Topt=25°C
Max.
Unit
%
%
%
V
µA
ms
TECHNICAL NOTES
When using these ICs, consider the following points:
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, be sure to use a 1.0µF or more capacitance C
OUT
with good frequency characteristics and ESR
(Equivalent Series Resistance) of which is in the range described as follows:
The relations between I
OUT
(Output Current) and ESR of Output Capacitor are shown in the typical
characteristics above. The conditions when the white noise level is under 40µV (Avg.) are marked as the
hatched area in the graph.
Test these ICs with as same external components as ones to be used on the PCB.
•
Make V
DD
and GND lines sufficient. When their impedance is high, the noise picked up or incorrect operation
may result.
•
Connect the capacitor with a capacitance of 1µF or more between V
DD
and GND as close as possible.
•
CD external components, especially Output Capacitor, as close as possible to the ICs and make wiring as
short as possible.
5
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