KA78RH33 Fairchild Semiconductor, KA78RH33 Datasheet

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KA78RH33

Manufacturer Part Number
KA78RH33
Description
The KA78RH33 is a +3
Manufacturer
Fairchild Semiconductor
Datasheet

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Features
• Fixed Output Voltage of +3.3V
• Space Saving SMD types of DPAK
• 1V(Typ) Dropout at Io=800mA
• Output Current of 800mA
• Thermal Shutdown Protection
• Over Current Protection
• Output trimmed to +/-1% Tolerance
• No minimum Load Requirement
Internal Block Diagram
©2001 Fairchild Semiconductor Corporation
KA78RH33
Semi Low Dropout Voltage Regulator
PROTECTION
GENERATOR
CURRENT
CIRCUIT
Description
The KA78RH33 is a +3.3V fixed Low Dropout Voltage
Regulator specifically designed for use in low voltage oper-
ation. The maximum load current is 0.8A and the dropout
voltage is guaranteed to be 1V(Typ). The Dropout Voltage
varies with load current. The regulator consists of compos-
ite PNP-NPN pass transistors.
1. GND 2. Vout 3.Vin
D-PAK
1
1.GND
3.Vin
2.Vout
www.fairchildsemi.com
Rev. 1.0.1

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KA78RH33 Summary of contents

Page 1

... No minimum Load Requirement Internal Block Diagram ©2001 Fairchild Semiconductor Corporation Description The KA78RH33 is a +3.3V fixed Low Dropout Voltage Regulator specifically designed for use in low voltage oper- ation. The maximum load current is 0.8A and the dropout voltage is guaranteed to be 1V(Typ). The Dropout Voltage varies with load current ...

Page 2

... KA78RH33 Absolute Maximum Ratings Parameter Power Supply Input Voltage Output Load Current Junction Temperature Operating Junction Temperature Storage Temperature Temperature Characteristics Parameter Temperature Coefficient of Output Voltage Electrical Characteristics (Refer to the test circuit. Vin= 5V, Co=10uF unless otherwise specified.) Parameter Symbol Output Voltage ...

Page 3

... Typical Application Vin Cin 0.1uF An input capacitor, Cin is not necessary for stability, but it will improve the overall performance KA78RH33 Co 10uF Gnd KA78RH33 Vout 3 ...

Page 4

... KA78RH33 Mechanical Dimensions Package 6.60 0.20 5.34 0.30 (0.50) (4.34) MAX0.96 2.30TYP [2.30 0.20] 4 Dimensions in millimeters D-PAK (0.50) 0.76 0.10 2.30TYP [2.30 0.20] 6.60 0.20 (5.34) (5.04) (1.50) (2XR0.25) 2.30 0.10 0.50 0.10 0.50 0.10 1.02 0.20 2.30 0.20 0.76 0.10 ...

Page 5

... Ordering Information Product Number Package KA78RH33R D-PAK Operating Temperature - 125 C KA78RH33 5 ...

Page 6

... KA78RH33 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...

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