Document
NCP4589
300 mA, Tri-Mode, LDO
Linear Voltage Regulator
The NCP4589 is a CMOS 300 mA LDO which switches to a low power mode under light current loads. The device automatically switches back to a fast response mode as the output load increases above 3 mA (typ.). The device can be placed in permanent fast mode through a mode select pin. The family is available in a variety of packages: SC−70, SOT23 and a small, ultra thin 1.2 x 1.2 x 0.4 mm XDFN.
Features
• Operating Input Voltage Range: 1.4 V to 5.25 V • Output Voltage Range: 0.8 to 4.0 V (available in 0.1 V steps) • Supply Current: Low Power Mode – 1.0 mA at VOUT < 1.85 V
Fast Mode – 55 mA Standby Mode – 0.1 mA
• Dropout Voltage: 230 mV Typ. at IOUT = 300 mA, VOUT = 2.8 V • ±1% Output Voltage Accuracy (VOUT > 2 V, TJ = 25 °C) • High PSRR: 70 dB at 1 kHz (Fast response mode) • Line Regulation 0.02%/V Typ. • Current Fold Back Protection • Stable with Ceramic Capacitors • Available in 1.2x1.2 XDFN, SC−70 and SOT23 Package • These are Pb−free Devices
Typical Applications
• Battery Powered Equipments • Portable Communication Equipments • Cameras, Image Sensors and Camcorders
VIN C1 1m
NCP4589 VIN VOUT
CE AE GND
VOUT C2 1m
http://onsemi.com
MARKING DIAGRAMS
SC−70 CASE 419A
XXX XMM
XDFN6 CASE 711AA
XX MM
SOT−23−5 CASE 1212
XXXMM 1
XXXX = Specific Device Code MM = Date Code
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 27 of this data sheet.
Figure 1. Typical Application Schematic
© Semiconductor Components Industries, LLC, 2012
February, 2012 − Rev. 1
1
Publication Order Number: NCP4589/D
NCP4589
AE AE
Vin Vout Vin
Vref Vref
Current Limit CE
GND
CE
Current Limit
NCP4589Hxxxx
NCP4589Dxxxx
Figure 2. Simplified Schematic Block Diagram
Vout GND
PIN FUNCTION DESCRIPTION
Pin No. XDFN
Pin No. SC−70
Pin No. SOT23
441
222
353
635
114
5−−
Pin Name VIN GND CE
VOUT AE NC
Input pin Ground Chip enable pin Output pin Auto Eco Pin No connection
Description
ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input Voltage (Note 1) Output Voltage
VIN VOUT
6.0 −0.3 to VIN + 0.3
V V
Chip Enable Input
VCE
−0.3 to 6.0
V
Auto Eco Input Output Current Power Dissipation XDFN Power Dissipation SC70
VAE IOUT PD
−0.3 to 6.0 400 400 380
V mA mW
Power Dissipation SOT23
420
Junction Temperature
TJ
−40 to 150
°C
Storage Temperature
TSTG
−55 to 125
°C
Operation Temperature
TA
−40 to 85
°C
ESD Capability, Human Body Model (Note 2)
ESDHBM
2000
V
ESD Capability, Machine Model (Note 2)
ESDMM
200
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. Refer to ELECTRICAL CHARACTERISTIS and APPLICATION INFORMATION for Safe Operating Area. 2. This device series incorporates E.