MC7905CT/45F Vishay, MC7905CT/45F Datasheet

IC, NEGATIVE VOLT REGULATOR, -5V, TO-220

MC7905CT/45F

Manufacturer Part Number
MC7905CT/45F
Description
IC, NEGATIVE VOLT REGULATOR, -5V, TO-220
Manufacturer
Vishay
Datasheet

Specifications of MC7905CT/45F

Primary Input Voltage
-10V
Output Voltage Fixed
-5V
Dropout Voltage Vdo
1.1V
No. Of Outputs
1
No. Of Pins
3
Output Current
1.5A
Operating Temperature Range
-20°C To +150°C
Document Number 74814
11-Jun-02
Notes:
A common ground is required between the input and the output voltages.
The input voltage must remain typically 2.0V more negative even during
the high point on the input ripple voltage.
xx = these two digits of the part number indicate output voltage.
Cin is required if regulator is located an appreciable distance from power
supply filter.
Co improves stability and transient response.
GND
0.33 F
I1
Input
Cin
Reference
Voltage
TO-220
1. Ground
2. Input
3. Output
(heatsink connected to pin 2)
Internal Block Diagram
Standard Application
I2
3-Terminal Fixed Negative Voltage Regulators
+
--
MC79xx
Short Circuit
Protection
Pin Arrangement
1
2
3
Q1
Q2
0.1 F
Output
R1
R2
R
Output
Co
Input
New Product
SC
Description
These voltage regulators are intended as complements
to the popular MC78xx Series devices. These negative reg-
ulators are available in the same seven-voltage options as
the MC78xx devices. In addition, one extra voltage
option commonly employed in MECL systems is also
available in the negative MC79xx Series.
Available in fixed output voltage options from –5.0 to –24
volts, these regulators employ current limiting, thermal shut-
down, and safe-area compensation – making them remark-
ably rugged under most operating conditions. With adequate
heatsinking they can deliver output currents in excess of
1.5 ampere.
Features
• Output current in excess of 1.5 Ampere
• No external components required
• Internal thermal overload protection
• Internal short-circuit current limiting
• Output transistor safe-area compensation
• Output voltage offered in 2% tolerance
Mechanical Data
Case: TO-220 Package
Weight: approx. 2.24g
Case outline is on the back page
formerly General Semiconductor
MC79xxCT Series
www.vishay.com
Vishay
1

Related parts for MC7905CT/45F

MC7905CT/45F Summary of contents

Page 1

... F • Internal short-circuit current limiting • Output transistor safe-area compensation • Output voltage offered in 2% tolerance Mechanical Data Case: TO-220 Package Weight: approx. 2.24g Case outline is on the back page R1 R2 Output Input MC79xxCT Series Vishay formerly General Semiconductor www.vishay.com 1 ...

Page 2

... J Output Noise Voltage (T = 25°C) J Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage Note: Where the condition T = 25°C is specified, pulse testing (<10ms) with low duty cycle is required to maintain junction temperature stability. J www.vishay.com 2 Symbol stg exceeds 150° ...

Page 3

... J = 25°C — 2 to125°C — –0.6 J Vishay Unit V 120 mV 60 120 1.3 mA 0.5 — V — dB — V — A — mV/°C Unit V 160 mV 80 160 0.5 — V — dB — V — A — mV/°C www.vishay.com 3 ...

Page 4

... Load Regulation (T = 25°C) J Quiescent Current Quiescent Current Change (T = 25°C) J Output Noise Voltage (T = 25°C) J Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage www.vishay.com 0°C to 125°C, unless otherwise noted. out J Test Symbol Conditions Circuit T = 25° – ...

Page 5

... J = 25°C — 2 to125°C — –1 J Vishay Unit V 300 mV 150 300 mV 150 0.5 — V — dB — V — A — mV/°C Unit V 360 mV 180 360 mV 180 0.5 — V — dB — V — A — mV/°C www.vishay.com 5 ...

Page 6

... Quiescent Current Change (T = 25°C) J Output Noise Voltage (T = 25°C) J Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage Test Circuit 1 1 MC79xx www.vishay.com 0°C to 125°C, unless otherwise noted. out J Test Symbol Conditions Circuit –26 to –38V 5mA – ...

Page 7

... Fig. 2 – Quiescent Current -11V V = -6. 20mA 100 T -- Junction Temperature ( C) J Fig. 4 –Ripple Rejection Ratio vs. Frequency Vin = --11V V = --6. 20mA o 100 1.0K 10K f -- Frequency ( Fig. 6 – Output Voltage vs. Junction Temperature V = --11V --6. 20mA 100 125 150 T -- Junction Temperature ( C) J www.vishay.com Vishay 125 100K 175 7 ...

Page 8

... MC79xxCT Series Vishay formerly General Semiconductor 10.25 13.9 0.41 2.53 0.185 www.vishay.com 8 TO-220 Case Outline 0.25 3.84 0.6 Dia. 2.69 0.25 6.26 14.8 0.51 8.54 3.94 0.375 Dimensions in millimeters 1.3 0.185 0.387 0.8 0.12 4.85 0.375 1.27 0.12 0.25 0.26 28.7 ...

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