Transcript
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K A7 9 M X X 3 -Te r m ina l 0 .5 A N e gat ive Volt a ge Re gulat or
Features
Description
• • • • • •
The KA79MXX series of 3-Terminal medium current negative voltage regulators are monolithic integrated circuits designed as fixed voltage regulators. These regulators employ internal current limiting, thermal shutdown and safe area compensation making them essentially indestructible.
No External Components Required Output Current in Excess of 0.5A Internal Thermal Overload Internal Short Circuit Current Limiting Output Transistor Safe Area Compensation Output Voltages of -5V, -12V
TO-220 (Dual Gauge)
1
D-PAK
1
1. GND 2. Input 3. Output
Schematic Diagram GND Q15
Q13
Q8 D1 D2 D3
R10 R11
R9
R6
R2
Q12 R1
R4
R15
Q14
Q10 Q11
Q9
R14
R12
R3
R5
R8
Q16 R13
R7
D5 Q18
Q2
Q17
Q3
R16
Q24 Q25
OUT
Q5 Q1
R17 Q4
Q6
D4
Q7 C1
Q19 R24
R25
Q20
R19 R18
C2
Q23 Q26 R20
Q21 Q22
R21
R22
Q27 R23
IN
Rev. 1.0.3 ©2012 Fairchild Semiconductor Corporation
KA79MXX
Absolute Maximum Ratings Parameter
Symbol
Value
Unit
Input Voltage(for VO = -5V to -12V)
VI
-35
V
Thermal Resistance Junction-Cases
RJC
5
C/W
Thermal Resistance Junction-Air
RJA
65
C/W
Operating Temperature Range
TOPR
0 ~ +125
C
Storage Temperature Range
TSTG
-65 ~ +150
C
Electrical Characteristics (KA79M05/KA79M05R) (Refer to test circuit, 0CTJ +125C, lO =350mA, VI =-10V,unless otherwise specified, CI =0.33F,CO=0.1F) Parameter Output Voltage
Symbol VO
Conditions
Min.
Typ.
Max.
TJ = +25C
-4.8
-5
-5.2
IO = 5mA to 350mA VI = -V7 to -25V
-4.75
-5
-5.25
VI= -7V to -25V
-
7.0
50
VI= -8V to -25V
-
2.0
30
Unit V
Line Regulation (Note1)
VO
TJ =+25C
Load Regulation (Note1)
VO
IO = 5mA to 500mA TJ = +25C
-
30
100
mV
TJ= +25C
-
3.0
6.0
mA
IO = 5mA to 350mA
-
-
0.4
IO = 200mA VI = -8V to -25V
-
-
0.4
IO = 5mA
-
-0.2
-
mV/C
-
40
-
V
54
60
-
dB
Quiescent Current Quiescent Current Change Output Voltage Drift
IQ IQ Vo/T
mV
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz, TA = +25C
Ripple Rejection
RR
f = 120Hz VJ = -8Vto -18V
Dropout Voltage
VD
TJ =+25C, IO = 500mA
-
1.1
-
V
Short Circuit Current
ISC
TJ = +25C, VI = -35V
-
140
-
mA
Peak Current
IPK
TJ = +25C
-
650
-
mA
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
2
KA79MXX
Electrical Characteristics (KA79M12R) (Continued) (Refer to test circuit, 0CTJ +125C, lO =350mA, VI = -19V,unless otherwise specified) Parameter Output Voltage
Symbol VO
Conditions
Min.
Typ.
Max.
Unit
TJ = +25C
-11.5
-12
-12.5
IO = 5mA to 350mA VI = -14.5V to -30V
-11.4
-12
-12.6
VI = -14.5V to -30V
-
8.0
80
VI = -15V to -25V
-
3.0
50
IO = 5.0mA to 500mA
-
30
240
mV mA
V
Line Regulation (Note1)
VO
TJ =+25C
Load Regulation (Note1)
VO
TJ = +25C
IQ
TJ = +25C
-
3
6
IO = 5mA to 350mA
-
-
0.4
VI = -14.5V to -30V
-
-
0.4
mA
IO = 5mA
-
-0.8
-
mV/C
-
75
-
V
54
60
-
dB
Quiescent Current Quiescent Current Change Output Voltage Drift
IQ VO/T
mV
Output Noise Voltage
VN
f = 10Hz to 100kHz, TA = +25C
Ripple Rejection
RR
f = 120Hz,VI = -15V to -25V
Dropout Voltage
VD
IO = 500mA, TJ = +25C
-
1.1
-
V
Short Circuit Current
ISC
VI = -35V, TJ = +25C
-
140
-
mA
Peak Current
IPK
TJ = +25C
-
650
-
mA
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
3
KA79MXX
Typical Performance Characteristics
0.0
VD - Dropout Voltage [V]
VIN = -10V VO = -5V
-0.2
IOUT = 0mA
-0.4 IOUT = 200mA
-0.6
IOUT = 300mA
IOUT = 100mA
-0.8 -1.0 IOUT = 400mA
-1.2
0
25
50
75
IOUT = 500mA
100
125
150
o
TA - Temperature [ C]
Figure 1. Dropout Voltage
4
KA79MXX
Typical Applications
2
VI
3
KA79MXX
VO
1
1.0uF
2.0uF
Figure 2. Fixed Output Regulator
VI
VO
KA79MXX
R1 C1 _ 2.2uF SOLID + TANTALUM
_ 1uF +
_ +
C2 25uF
C3 SOLID TANTALUM
R2
Figure 3. Variable Output Note: 1. Required for stability. For value given, capacitor must be solid tantalum. 25F aluminum electrolytic may be substituted. 2. C2 improves transient response and ripple rejection. Do not increase beyond 50F.
5
KA79MXX
Mechanical Dimensions Package Dimensions in millimeters
TO-220 [DUAL GAUGE] 4.50 ±0.20
2.80 ±0.10 (3.00)
+0.10
1.30 –0.05
18.95MAX.
(3.70)
ø3.60 ±0.10
15.90 ±0.20
1.30 ±0.10
(8.70)
(1.46)
9.20 ±0.20
(1.70)
9.90 ±0.20
(45° 1.52 ±0.10
0.80 ±0.10 2.54TYP [2.54 ±0.20]
10.08 ±0.30
(1.00)
13.08 ±0.20
)
1.27 ±0.10
+0.10
0.50 –0.05
2.40 ±0.20
2.54TYP [2.54 ±0.20]
10.00 ±0.20
6
KA79MXX
Mechanical Dimensions (Continued) Package Dimensions in millimeters
D-PAK
7
KA79MXX
Ordering Information Product Number
Package
KA79M05TU
TO-220 (Dual Gauge)
Operating Temperature
KA79M05RTM KA79M05RTF KA79M12RTM
D-PAK
0 ~ +125C
KA79M12RTF * Refer to below figure for TM / TF suffix of DPAK packing option
TM :
TF : D-PAK Unit Orientation
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. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.
2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
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