LDO REGULATOR. RP109K101B Datasheet

RP109K101B Datasheet PDF


Part Number

RP109K101B

Description

LOW NOISE 150mA LDO REGULATOR

Manufacture

RICOH

Total Page 30 Pages
Datasheet
Download RP109K101B Datasheet


RP109K101B
RP109x SERIES
LOW NOISE 150mA LDO REGULATOR
NO.EA-204-170425
OUTLINE
The RP109x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low
supply current, low ON-resistance, and high ripple rejection. Each of these ICs consists of a voltage reference
unit, an error amplifier, a resistor-net for voltage setting, a current limit circuit and a chip enable circuit.
These ICs perform with low dropout voltage and a chip enable function which prolong the battery life.
The line transient response and load transient response of the RP109x Series are excellent, thus these ICs are
very suitable for the power supply for hand-held communication equipment. RP109x Series contributes to the
downsizing of the hand-held equipment because it can use the 0.1F ceramic capacitor.
In addition to SOT-23-5, SC-88A and DFN1010-4 packages, a 0.8mm square ultra compact DFN(PLP)0808-4
package is also available.
FEATURES
Supply Current .............................................................Typ. 50A
Standby Mode ..............................................................Typ. 0.1A
Dropout Voltage............................................................Typ. 0.25V (IOUT150mA, VOUT2.5V)
Ripple Rejection ...........................................................Typ. 75dB (f1kHz, VOUT2.5V)
Temperature-Drift Coefficient of Output Voltage ..........Typ. 100ppm/C (VOUT1.8V)
Typ. 30ppm/C (VOUT≥1.8V)
Line Regulation ............................................................Typ. 0.02%/V
Output Voltage Accuracy..............................................1.0%
Packages......................................................................DFN(PLP)0808-4, DFN1010-4, SC-88A, SOT-23-5
Input Voltage Range.....................................................1.4V to 5.25V
Output Voltage Range..................................................0.8V to 3.6V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
Built-in Fold Back Protection Circuit.............................Typ. 40mA (Current at short mode)
Ceramic capacitors are recommended to be used with this IC .... 0.1F 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.
Power source for home appliances.
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RP109K101B
RP109x
NO.EA-204-170425
BLOCK DIAGRAMS
RP109xxxxB
VDD
Vref
Current Limit
CE
VOUT VDD
GND CE
RP109xxxxD
VOUT
Vref
Current Limit
GND
SELECTION GUIDE
The output voltage, auto discharge function, package, and the taping type, etc. for the ICs can be selected at
the user’s request.
Product Name
Package
Quantity per Reel
Pb Free
RP109Kxx1-TR
DFN(PLP)0808-4
10,000 pcs
Yes
RP109Lxx1-TR
DFN1010-4
10,000 pcs
Yes
RP109Qxx2-TR-FE
SC-88A
3,000 pcs
Yes
RP109Nxx1-TR-FE
SOT-23-5
3,000 pcs
Yes
xx: Specify the set output voltage (VSET) within the range of 0.8V to 3.6 in 0.1V steps.
Halogen Free
Yes
Yes
Yes
Yes
The second decimal point of VSET is described as below.
1.25V: RP109x12x5
1.85V: RP109x18x5
2.85V: RP109x28x5
: Select the polarity of the CE pin from (B) "H" active without auto-discharge function or (D) "H" active with
auto-discharge function.
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