RICOH RP111x Series Good Load Transient Response Low Voltage 500mA LDO Data Sheet User Manual

RP111x Series

Good Load Transient Response Low Voltage 500m A LDO

The RP111x Series are CMOS-based LDO regulators featuring 500m A output current. The minimum input voltage is as low as 1.4V and the output voltage can be set from 0.7V. Due to a built-in 0.46Ω (at VOUT=2.8V) on-resistor, RP111x can provide a low dropout voltage. RP111x also features a ripple rejection at 75d B and low noise. The output voltage accuracy is as high as ±0.8%. The accuracy of output voltage of RP111x including the temperature characteristics and the load transient response has been improved. The Typ. and Max value of under/overshoot according to the various output current are shown in the typical characteristics in the datasheet, 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. In addition to SOT-23-5 and SOT-89-5 packages, a 1.2mm square DFN1212-6 package is also available. Ceramic capacitors can be used.

FEATURES • Supply Current (ISS) ····················· Typ. 80μA (VIN=SET VOUT+1.0V, IOUT=0m A) • Fold-back Protection Circuit ···········Current limit Typ. 50m A • Standby Current (Istandby) ·············· Typ. 0.1μA (Same as above, VCE=0V) • Thermal Shutdown Circuit ··············Stops at 165°C • Dropout Voltage (VDIF) ················· Typ. 0.23V (IOUT=500m A, VOUT=2.8V) • Inrush Current Limit Circuit ···········Typ.400m A • Ripple Rejection (RR)·················· Typ. 75d B (f=1k Hz) • Load Transient Response Accuracy·····Typ. -75m V/+45m V • Input Voltage Range (VIN) ············ 1.4V to 5.25V (IOUT=1m A⇔250m A (tr=tf=0.5μs), COUT=1μF) • Output Voltage Range (VOUT)······· 0.7V to 3.6V (internally fixed) • Packages········································DFN1212-6, SOT-23-5, • Output Voltage Accuracy ············· ± 0.8% SOT-89-5 • Temp. coeff. of Output Voltage ···· Typ. ± 30ppm/°C (VOUT ≥ 1.8V) • Auto-Discharge function ·················D Version • Line Regulation···························· Typ. 0.02%/V • Ceramic capacitors can be used. ···1μF or more • Load Regulation ·························· Typ. 1m V

(The above shows specification at Topt=25°C. Design assurance value at -40°C ≤ Topt ≤ 85°C is also available. For details, please refer to the datasheet.)

BLOCK DIAGRAM TYPICAL APPLICATIONS

RP111xxx1B RP111xxx1D RP111x

(Without Auto-Discharge function) (With Auto-Discharge function) Fixed output voltage Case

ro po ut ol ta ge IF (m

VDD VOUT OUTIN

RP111x

VDD VOUT VDD VOUT

CIN VFB COUT

VFB VFB CE GND

Vref Vref

RP111x07x

Current Limit Current Limit Adjustable output voltage Case Thermal Shutdown Thermal Shutdown

CE GND CE GND VDD VOUT OUTIN

RP111x

CIN VFB COUT

CE GND

SELECTION GUIDES

Part No. .xx. : Specify the output voltage within the range of 0.7V (.07.) to 3.6V (.36.)

Halogen Free Package Q'ty per Reel

in 0.1V steps.

DFN1212-6 5,000 pcs RP111L.xx.1.∗ -TR

.∗ : Select from (.B.) without auto-discharge function or

SOT-23-5 3,000 pcs RP111N.xx.1.∗ -TR-FE

(.D.) with auto-discharge function.

SOT-89-5 1,000 pcs RP111H.xx.1.∗ -T1-FE

PACKAGES TYPICAL CHARACTERISTIC

DFN1212-6 SOT-23-5 SOT-89-5 RP111x281x Dropout Voltage vs. Output Current

Top View Bottom View 5 4

Topt=85°C Topt=25°C Topt=-40°C

1 VOUT 1 VDD 1 VFB 2 VFB 2 GND 2 GND 3 GND 3 CE 3 CE 4 CE 4 VFB 4 VDD 5 NC 5 VOUT 5 VOUT 6 VDD Output Current IOUT(m A) ∗) The tab is substrate level (GND)

APPLICATIONS • Power source for hand-held communication equipment, cameras, and VCRs • Power source for battery-powered equipment • Power source for home appliances and digital home appliances No.EK-241-110316 CMOS LDO Regulator