RICOH R1173x Series 1A LDO Data Sheet User Manual (with/without Adjust pin)

R1173x Series 1A LDO with/without Adjust pin

The R1173x Series are CMOS-based LDO regulators featuring 1A output. R1173x offers almost the same basic performances as the R1172x Series. But R1173x offers an excellent load regulation. While the output voltage is internally set in the R1172x Series, the R1173x Series is available in two versions: standard version in which the output voltage is internally set and the adjusted version in which it is set with an external resistor. For this reason, when the output voltage is not determined yet, the adjusted version can be used for advanced production. After the final determination of the voltage is made, it can be replaced with the standard version.

FEATURES • Supply Current (ISS) ·················Typ. 60μA (VIN=SET VOUT+1.0V) • Output Voltage Accuracy ················± 2% • Standby Current (Istandby) ··········Typ. 0.1μA (VIN=6.0V, CE="L") • Temp. coeff. of Output Voltage ·······Typ. ± 100ppm/°C • Dropout Voltage (VDIF) ·············Typ. 0.05V (IOUT=300m A, VOUT=2.8V) • Line Regulation·······························Typ. 0.05%/V

Typ. 0.18V (IOUT=1A, VOUT=2.8V) • Load Regulation ·····························Typ. -2m V (IOUT=300m A)

• Ripple Rejection (RR)··············Typ. 70d B (f=1k Hz, VOUT ≤ 4.0V) Typ. -3m V (IOUT=1A)

Typ. 60d B (f=1k Hz, VOUT > 4.0V) • Fold-back Protection Circuit ···········Current limit Typ. 250m A

• Input Voltage Range (VIN) ········1.4V to 6.0V • Inrush Current Limit Circuit·············Typ. 500m A • Output Voltage Range (VOUT)···0.8V to 5.0V (internally fixed), • Thermal Shutdown Circuit ··············Stops at 150°C

Externally specified by the ADJUST pin (001B/D) • Packages········································SOT-89-5, HSON-6, HSOP-6J • Ceramic capacitors can be used. ···4.7μF or more (VOUT ≥ 1.0V)

BLOCK DIAGRAMS

R1173xxx1B R1173xxx1D R1173x001B R1173x001D

(Without Auto-Discharge function) (With Auto-Discharge function) (With ADJ, Without Auto- Discharge function) (With ADJ, With Auto-Discharge function)

ro lt IF (m

VDD VOUT VDD VOUT VDD VOUT VDD VOUT

ADJ ADJ

Vref Vref Vref Vref

Current Limit Current Limit Current Limit Current Limit Thermal Shutdown Thermal Shutdown Thermal Shutdown Thermal Shutdown

CE GND CE GND CE GND CE GND

SELECTION GUIDES

.xx. : Specify the output voltage within the range of 0.8V (.08.) to 5.0V (.50.)

Halogen Free Package Q'ty per Reel Part No.

in 0.1V steps.

SOT-89-5 1,000 pcs R1173H.xx.1.∗ -T1-FE

(For the version with ADJUST, .xx. is fixed at.00.)

HSON-6 3,000 pcs R1173D.xx.1.∗ -TR-FE

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

HSOP-6J 1,000 pcs R1173S.xx.1.∗ -E2-FE

(.D.) with auto-discharge function.

PACKAGES (Top View) TYPICAL CHARACTERISTIC

SOT-89-5 HSON-6 HSOP-6J R1173x301x Dropout Voltage vs. Output Current

1 ADJ or NC 1 VOUT 1 VOUT

2 GND 2 VOUT 2 GND∗1 3 CE 3 ADJ or NC 3 ADJ or NC 4 VDD 4 GND 4 CE 5 VOUT 5 CE 5 GND∗1

6 VDD 6 VDD

Output Current IOUT(m A)

∗) The tab and tab suspension leads on back side are substrate level (GND). ∗1) The VOUT pin and GND pin must be wired each other when it is mounted on board.

APPLICATIONS • Power source for hand-held communication equipment, cameras, and VCRs • Power source for laptop personal computers • Power source for home appliances and digital home appliances • Power source for battery-powered equipment

No.EK-123-101001 CMOS LDO Regulator