L149.pdf 데이터시트 (총 6 페이지) - 파일 다운로드 L149 데이타시트 다운로드

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HIGH OUTPUT CURRENT (4A peak)
HIGH CURRENT GAIN (10.000 typ.)
OPERATION UP TO ± 20 V
THERMAL PROTECTION
SHORT CIRCUIT PROTECTION
OPERATION WITHIN SOA
HIGH SLEW-RATE (30 V/µs)
DESCRIPTION
The L149 is a general purpose power booster in
Pentawatt ® package consisting of a quasi-com-
plentary darlington output stage with the associ-
ated biasing system an inhibit facility.
The device is particularly suited for use with an ope-
rational amplifier inside a closed loop configuration
to increase output current.
ABSOLUTE MAXIMUM RATINGS
Symbol
Vs
Vi
V5 - V4
V4 - V3
Io
Iο
VINH
Parameter
Supply Voltage
Input Voltage
Upper Power Transistor VCE
Lower Power Transistor VCE
DC Output Current
Peak Output Current (internally limited)
Input Inhibit Voltage
Ptot Total Power Dissipation at Tcase = 75 °C)
TEST CIRCUIT
L149
4A LINEAR DRIVER
Pentawatt®
ORDER CODE : L149V
Value
±20
40
40
3
4
- Vs + 5
- Vs - 1.5
25
Unit
V
Vs
V
V
A
A
V
V
W
March 1993
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L149
CONNECTION DIAGRAM (top view)
SCHEMATIC DIAGRAM
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THERMAL DATA
Symbol
Rth-j-case
Parameter
Thermal resistance junction-case
ELECTRICAL CHARACTERISTICS (Tj = 25 °C, Vs = ± 16V)
Symbol
Parameter
Test conditions
Vs
Id
Iin
hFE
GV
VCEsat
Supply Voltage
Quiescent Drain Current
Input current
DC current drain
Voltage gain
Saturation voltage
(for each transistor)
Vs = ± 16 V
Vs = ± 16 V
Vs = ± 16 V
Vs = ± 16 V
Io = 3A
Vi = 0V
Io = 3A
Io = 1.5A
Vos
VINH
Input offset voltage
Inhibit input voltage (pins 1-3)
Vs = ± 16 V
ON condition
OFF condition
RINH
SR
Inhibit input resistance
Slew rate
B Power bandwidth
Vo = ± 10V, d = 1%, RL = 8
L149
Value
max 3
Unit
°C/W
Min.
6000
Typ.
30
200
10000
1
Max.
± 20
400
3.5
Unit
V
mA
µA
-
-
V
0.3 V
± 1.8
± 0.3
V
2.0 K
30 V/µs
200 KHZ
APPLICATION INFORMATION
Figure 1. High slew-rate power operational amplifier (SR = 13V/µs)
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