KA78RM33 Fairchild Semiconductor, KA78RM33 Datasheet

IC REG LDO 0.5A 3.3V TO-220

KA78RM33

Manufacturer Part Number
KA78RM33
Description
IC REG LDO 0.5A 3.3V TO-220
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of KA78RM33

Regulator Topology
Positive Fixed
Voltage - Output
3.3V
Voltage - Input
Up to 20V
Number Of Regulators
1
Current - Output
500mA (Max)
Operating Temperature
-25°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Dropout (typical)
-
Current - Limit (min)
-

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©2006 Fairchild Semiconductor Corporation
KA78RM33 Rev. 1.0.4
Internal Block Diagram
Packages
KA78RM33
Low Dropout Voltage Regulator
Features
0.5A/3.3V Output Low Dropout Voltage Regulator
Low Dropout Voltage (Max. 0.6V)
Over Current Protection, Thermal Shutdown
SOA Protection, Short Circuit Protection
PACKAGE DIMENSIONS
GND
V
IN
1
2
D-PAK
1
Reference
Generator
Bandgap
Current
2
3
1. V
Short Circuit
IN
Protection
Protection
Shutdown
Thermal
Amp.
Error
2. GND
3. V
1
Description
The KA78RM33 is a low-dropout voltage regulator suit-
able for various electronic equipments. It provides con-
stant voltage power source with surface mount type
package (D-PAK). The dropout voltage of KA78RM33 is
below 0.6V in full rated current(0.5A). This regulator has
various functions such as an over current protection, a
thermal shut down and the SOA (Safe operating Area)
protection.
OUT
Protection
Output
Drive
SOA
TO-220
1 2 3
Q1
R1
R2
3 V
OUT
February 2006
www.fairchildsemi.com

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KA78RM33 Summary of contents

Page 1

... The KA78RM33 is a low-dropout voltage regulator suit- able for various electronic equipments. It provides con- stant voltage power source with surface mount type package (D-PAK). The dropout voltage of KA78RM33 is below 0.6V in full rated current(0.5A). This regulator has various functions such as an over current protection, a thermal shut down and the SOA (Safe operating Area) protection ...

Page 2

... I = 0.25A 25°C, unless otherwise specified Parameter Output Voltage Load Regulation Line Regulation Ripple Rejection Ratio Dropout Voltage Quiescent Current Peak Current Output Noise Voltage Temperature Coefficient of Output Voltage KA78RM33 Rev. 1.0.4 Symbol Value 0 110 JA Pd Interally limited Tj 150 T -25 to +125 ...

Page 3

... Mechanical Dimensions TO-220 Package 9.90 (8.70) ø3.60 1.27 0.10 2.54TYP [2.54 ] 0.20 10.00 Dimensions in millimeters KA78RM33 Rev. 1.0.4 0.20 0.10 1.52 0.10 0.80 0.10 2.54TYP [2.54 ] 0.20 0.20 3 4.50 0.20 +0.10 1.30 –0.05 +0.10 0.50 2.40 0.20 –0.05 www.fairchildsemi.com ...

Page 4

... Mechanical Dimensions D-PAK Package 6.60 5.34 (0.50) (4.34) MAX0.96 2.30TYP [2.30 0.20] Dimensions in millimeters KA78RM33 Rev. 1.0.4 (Continued) 0.20 0.30 (0.50) 0.76 0.10 2.30TYP [2.30 0.20] 6.60 (2XR0.25) 4 2.30 0.10 0.50 0.10 0.50 0.10 1.02 0.20 2.30 0.20 0.20 (5.34) (5.04) (1 ...

Page 5

... Ordering Information Product Number KA78RM33 KA78RM33TU KA78RM33TSTU KA78RM33RTF KA78RM33RTM KA78RM33 Rev. 1.0.4 Package Packing TO-220 Bulk Rail Rail (Short Leads) D-PAK Tape & Reel (2K/reel) Tape & Reel (2.5K/reel) 5 Operating Temperature -25°C to +125°C www.fairchildsemi.com ...

Page 6

... PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Preliminary No Identification Needed Obsolete KA78RM33 Rev. 1.0.4 ISOPLANAR™ PowerSaver™ LittleFET™ PowerTrench MICROCOUPLER™ QFET MicroFET™ QS™ MicroPak™ ...

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