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PDF RP152 Data sheet ( Hoja de datos )
| Número de pieza | RP152 | |
| Descripción | 150mA Dual LDO REGULATOR | |
| Fabricantes | RICOH | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RP152 (archivo pdf) en la parte inferior de esta página. Total 29 Páginas | ||
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RP152/153 Series
PRELIMINARY
150mA Dual LDO REGULATOR
OUTLINE
NO.EA-200-20090311
The RP152/153x 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 RP152, 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
RP152/153x 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 for RP152, and DFN1216-8 for RP153, dual LDO regulators are included in each package are high
density mounting of the ICs on boards is possible.
In RP153, the power supply of each circuit can be individually supplied. The transient response characteristic of D
and E Version is improved. (The supply current: Typ. 85μA).
FEATURES
Supply Current ··············································································· Typ. 40μA (VR1, VR2)
Supply Current (RP153xxxxD/E) ··················································· Typ. 85μA (VR1, VR2)
Standby Mode ················································································ Typ. 0.1μA (VR1, VR2)
Low Dropout Voltage······································································ Typ. 0.22V(IOUT=150mA, VOUT=2.8V)
High Ripple Rejection ···································································· TYP. 70dB (f=1kHz)
TYP. 65dB (f=10kHz)
High Output Voltage Accuracy ······················································· ±1.0%
Low Temperature-Drift Coefficient of Output Voltage ···················· Typ. ±80ppm/°C
Excellent Line Regulation ······························································ Typ. 0.02%/V
Small Packages ············································································· RP152: DFN1212-6, SOT-23-6,
RP153: DFN1216-8
Built-in Fold Back Protection Circuit ·············································· Typ. 40mA (Current at short mode)
Ceramic capacitors are recommended to be used with this IC ··············· 0.22μF or more
APPLICATIONS
Power source for electrical applications such as cameras, VCRs and camcorders
Power source for battery-powered equipment
Power source for portable communication equipment
Ver.1.5
1
1 page  
PIN CONFIGURATION
RP152N (SOT-23-6)
654
(mark side)
123
RP152L (DFN1212-6)
Top View
Bottom View
654
4 56
123
3 21
RP153L (DFN1216-8)
Top View
87
6
5
Bottom View
56
7
8
12
34
43
21
RP152/153x
Preliminary
Ver.1.5
5
5 Page 
TYPICAL APPLICATION
RP153xxxxA/B/D/E
IN2
Cin2
IN1
Cin1
CE2
VOUT2
VDD2
RP153
Series
VDD1
GND
CE1
VOUT1
OUT2
Cout2
OUT1
Cout1
RP152/153x
Preliminary
TECHNICAL NOTES
Cin1=Cin2=Cout1=Cout2=Ceramic 0.22μF
When using these ICs, consider the following points:
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this
purpose, use capacitors (0.22μF or more) for COUT1 and COUT2 with good frequency characteristics and ESR
(Equivalent Series Resistance).
(Note: If additional ceramic capacitors are connected with parallel to the output pin with an output capacitor for phase
compensation, the operation might be unstable. Because of this, test these ICs with as same external components as
ones to be used on the PCB.)
PCB Layout
Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
Connect capacitors with a capacitance value as much as 0.22μF or more between VDD and GND pin, and as close as
possible to the pins (Cin1 / Cin2).
Set external components, especially the output capacitors, as close as possible to the ICs, and make wiring as
short as possible (Cout1 / Cout2).
Ver.1.5
11
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet RP152.PDF ] | |
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