JAN7905K(2001) 查看數據表（PDF） - Microsemi Corporation

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JAN7905K
(Rev.:2001)

NEGATIVE FIXED VOLTAGE REGULATOR

Microsemi Corporation 

SG7900A/SG7900 SERIES

CHARACTERISTIC CURVES (continued)

NEGATIVE REGULATOR

FIGURE 4.

SHORTCIRCUIT CURRENT VS. VIN

FIGURE 5.

QUIESCENT CURRENT VS. VIN

FIGURE 6.

SHORT CIRCUIT CURRENT VS. VIN

FIGURE 7.

DROPOUT CHARACTERISTICS

APPLICATIONS

FIGURE 8.

RIPPLE REJECTION VS. FREQUENCY

FIGURE 9 - FIXED OUTPUT REGULATOR

FIGURE 10 - CIRCUIT FOR INCREASING OUTPUT VOLTAGE

NOTE: 1. C1 is required only if regulator is separated from rectifier filter.

2. Both C1 and C2 should be low E.S.R. types such as solid

tantalum. If aluminum electrolytics are used, at least 10 times

values shown should be selected.

3. If large output capacities are used, the regulators must be

protected from momentary input shorts. A high current diode

NOTE: C3 optional for improved transient response and ripple rejec

VOUT

=

V

(REGULATOR)

R1 + R2

R1

R2

=

V(REG)

15mA

05/01 Rev 1.5

Copyright  1999

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

3

(714) 898-8121 ∞FAX: (714) 893-2570

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