RP111x-Y Series
Good Transient Response Low Voltage 500 mA LDO for High Temperature Applications*
NO.EA-375-150204
OUTLINE
The RP111x is a CMOS-based LDO regulator featuring 500 mA output current. The input voltage is as low as
1.4 V and the output voltage can be set from 0.7 V. Due to a built-in 0.46
(at V
OUT
= 2.8 V) on-resistor, RP111x
can provide a low dropout voltage. RP111x also features an excellent line transient response, ripple rejection at
75 dB, and low noise. The output voltage accuracy is as high as ±0.8% and the temperature drift coefficient of
output voltage is low at ±30 ppm/°C. The accuracy of the output voltage of RP111x includes the temperature
characteristics and the load transient response has been improved. The typ. and max value of under/overshoot
for various output current are shown in the typical characteristics, therefore the accuracy of the output voltage
estimation will be easy on the actual operating cases. In addition to a fold-back protection circuit built into
conventional regulators, RP111x contains a thermal shutdown circuit and an inrush current limit circuit.
SOT-23-5, SOT-89-5, and DFN1212-6 packages are available.
* This product is a high-reliability semiconductor device that is designed for the use in high-temperature
environment. This product has successfully passed our rigorous reliability test in addition to the high-
temperature test. To distinguish this product from our consumer products, "-Yx" is added to the end of the
name of the product.
FEATURES
Input Voltage Range (Maximum Rating)········· 1.4 V to 5.25 V (6.0 V)
Operating Temperature ······························
−40°C
to 105°C
Supply Current ········································· Typ. 80
A
Standby Current ······································· Typ. 0.1
A
Dropout Voltage ······································· Typ. 0.23 V (I
OUT
= 500 mA、V
SET
= 2.5 V)
Ripple Rejection ······································· Typ. 75 dB (f = 1 kHz)
Typ. 70 dB (f = 10 kHz)
Output Voltage Accuracy ···························· ±0.8% (V
SET
≥
1.8 V)
Output Voltage Temperature Coefficient ········· Typ. ±30 ppm/C (V
SET
≥
1.8 V)
Line Regulation ········································ Typ. 0.02%/V
Input Transient Response ··························· Typ. ±1.5 mV (V
IN
V
SET
+ 0.5 V⇔V
SET
+ 1.5 V (tr = tf = 5.0
s),
V
IN
≥
1.4 V, I
OUT
= 30 mA)
Packages················································ DFN1212-6, SOT-23-5, SOT-89-5
Output Voltage Range ······························· 0.7 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.0 V, 3.3 V, 3.4 V
Contact Ricoh sales representatives for other voltages.
Built-in Fold-back Protection Circuit ·············· Typ. 50 mA
Thermal Shutdown Temperature ·················· 165C
Inrush Current Limit··································· Typ. 400 mA (for 180
s
after start-up)
Ceramic capacitors are recommended to be used with this IC
············· 1.0
F
or more
Output Noise ··········································· 20 x V
SET
Vrms
(BW = 10 Hz to 100 kHz, V
SET
≥
1.8 V)
APPLICATIONS
●
●
●
Industrial equipments such as FAs and smart meters
Equipments used under high-temperature conditions
Equipments accompanied by self-heating
1
RP111x-Y
NO.EA-375-150204
BLOCK DIAGRAMS
RP111xxx1B
V
DD
V
OUT
V
FB
V
DD
RP111xxx1D
V
OUT
V
FB
Vref
Current Limit
Thermal Shutdown
Vref
Current Limit
Thermal Shutdown
CE
GND
CE
GND
SELECTION GUIDE
The set output voltage, auto-discharge function,
*1
, and package type for the IC are user-selectable.
Product Name
RP111Lxx1-TR-Y
RP111Nxx1-TR-YE
RP111Hxx1-T1-YE
Package
DFN1212-6
SOT-23-5
SOT-89-5
Quantity per Reel
5,000 pcs
3,000 pcs
1,000 pcs
Pb Free
Yes
Yes
Yes
Halogen Free
Yes
Yes
Yes
xx: Specify the set output voltage (V
SET
)
0.7 V (07), 1.2 V (12), 1.5 V (15), 1.8 V (18), 2.5 V (25), 2.8 V (28), 3.0 V (30), 3.3 V (33), 3.4 V (34)
Contact Ricoh sales representatives for other voltages.
:
Specify the auto-discharge function at off state
(B) Active-high, without auto discharge function at off state
(D) Active-high, with auto discharge function at off state
*1
Auto-discharge function quickly lowers the output voltage to 0 V by releasing the electrical charge in the external
capacitor when the chip enable signal is switched from the active mode to the standby mode.
2
RP111x-Y
NO.EA-375-150204
PIN DESCRIPTIONS
DFN1212-6
Top View
6
5
4
SOT-23-5
Bottom View
4
5
6
SOT-89-5
5
4
5
4
*1
(mark side)
1
2
3
3
2
1
1
2
3
1
2
3
DFN1212-6
Pin No.
1
2
3
4
5
6
Symbol
V
OUT
V
FB
GND
CE
NC
V
DD
Output Pin
Feed Back Pin
Ground Pin
Description
Chip Enable Pin (Active-high)
No connection
Input Pin
*1
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-23-5
Pin No
1
2
3
4
5
SOT-89-5
Pin No
1
2
3
4
5
Symbol
V
FB
GND
CE
V
DD
V
OUT
Feed Back Pin
Ground Pin
Chip Enable Pin (Active-high)
Input Pin
Output Pin
Description
Symbol
V
DD
GND
CE
V
FB
V
OUT
Input Pin
Ground Pin
Chip Enable Pin (Active-high)
Feed Back Pin
Output Pin
Description
The V
OUT
pin should be connected to the V
FB
pin when using RP111x as an internal fixed output voltage type. In
case of using this device as an external adjustable type, refer to
ADJUSTABLE OUTPUT VOLTAGE SETTING
for detailed information.
3
RP111x-Y
NO.EA-375-150204
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current
Power Dissipation (DFN1212-6)
*1
Standard Land Pattern
P
D
Power Dissipation (SOT-23-5)
*1
Power Dissipation (SOT-89-5)
*1
Tj
Tstg
*1
Item
Rating
−0.3
to 6.0
−0.3
to 6.0
−0.3
to V
IN
+ 0.3
510
600
420
900
1300
−40
to 125
−55
to 125
Unit
V
V
V
mA
Standard Land Pattern
Standard Land Pattern
High Wattage Land Pattern
mW
Junction Temperature
Storage Temperature
°C
°C
Refer to
PACKAGE INFORMATION
for detailed information.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent
damages and may degrade the lifetime and safety for both device and system using the device in the field. The functional
operation at or over these absolute maximum ratings are not assured.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
IN
Ta
*2
Item
Input Voltage
*2
Operating Temperature
Rating
1.4 to 5.25
−40
to 105
Unit
V
°C
In case of exceeding the maximum Input Voltage of 5.25 V, the device must be operated on condition that the Input
Voltage is up to 5.5 V and the total operating time is within 500 hrs.
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.
4
RP111x-Y
NO.EA-375-150204
ELECTRICAL CHARACTERISTICS
V
IN
= V
SET
+ 1.0 V (V
SET
>
1.5 V), V
IN
= 2.5 V (V
SET
≤
1.5 V), I
OUT
= 1 mA,
C
IN
= C
OUT
= 1.0
F,
unless otherwise noted.
The specifications surrounded by
are guaranteed by design engineering at
40°C
≤
Ta
≤
105°C.
RP111xxx1D/B
Symbol
Item
Ta = 25C
V
OUT
Output voltage
−40C ≤
Ta
≤
105C
I
OUT
Output Current
1 mA
≤
I
OUT
≤
500 mA
I
OUT
: 1 mA⇔250 mA
(tr = tf = 0.5
s)
I
OUT
: 1 mA⇔250 mA
(tr = tf = 5
s)
V
DIF
I
SS
Istandby
Dropout Voltage
Supply Current
Standby Current
I
OUT
= 0 mA
V
CE
= 0 V
V
SET
+ 0.5 V
≤
V
IN
≤
5.25 V,
V
IN
≥
1.4 V
V
OUT
= 0 V
1.0
0.4
165
100
60
C
OUT
= 1
F
C
OUT
= 2.2
F
C
OUT
= 1
F
Refer to the
Dropout Voltage
80
0.1
0.02
50
0.3
0.6
125
7.0
0.10
A
A
%/V
mA
A
V
V
°C
°C
Conditions
V
SET
<
1.8 V
Min.
V
SET
≥
1.8 V x 0.992
−18
Typ.
(Ta = 25°C)
Max.
x 1.008
18
x 1.015
50
Unit
V
mV
V
mV
mA
mV
V
SET
≥
1.8 V x 0.985
V
SET
<
1.8 V
−55
500
1
−75
+45
−55
+35
−20
+15
V
OUT
/I
OUT
Load regulation
20
V
TRLD
Load Transient
Response
mV
V
OUT
/V
IN
Line regulation
I
SC
I
PD
V
CEH
V
CEL
T
TSD
T
TSR
R
LOW
Short Current Limit
CE Pull-down Current
CE Input Voltage "H"
CE Input Voltage "L"
Thermal Shutdown
Junction Temperature
Temperature
Thermal Shutdown
Junction Temperature
Released Temperature
LOW output Nch Tr. ON
Resistance
V
IN
= 4.0 V, V
CE
= 0 V
(RP111xxx1D only)
All test items listed under Electrical Characteristics are done under the pulse load condition (Tj
≈
Ta = 25C) except for
Load Transient Response.
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
