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L149

STMicroelectronics
Part Number L149
Manufacturer STMicroelectronics
Description 4A LINEAR DRIVER
Published Mar 22, 2005
Detailed Description L149 4A LINEAR DRIVER HIGH OUTPUT CURRENT (4A peak) HIGH CURRENT GAIN (10.000 typ.) OPERATION UP TO ± 20 V THERMAL PROTE...
Datasheet PDF File L149 PDF File

L149
L149

Overview
L149 4A LINEAR DRIVER 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-complentary darlington output stage with the associated biasing system an inhibit facility.
The device is particularly suited for use with an operational amplifier inside a closed loop configuration to increase output current.
ABSOLUTE MAXIMUM RATINGS Symbol Vs Vi V5 - V4 V4 - V3 Io Iο VINH Ptot Supply Voltage Input Voltage Upper Power Transistor VCE Lower Power Transistor VCE DC Output Current Peak Output Current (internally limited) Input Inhibit Voltage Total Power Dissipation at Tcase = 75 °C) 40 40 3 4 - Vs + 5 - Vs - 1.
5 25 Parameter Value ±20 Unit V Vs V V A A V V W Pentawatt® ORDER CODE : L149V TEST CIRCUIT March 1993 1/6 L149 CONNECTION DIAGRAM (top view) SCHEMATIC DIAGRAM 2/6 L149 THERMAL DATA Symbol Rth-j-case Thermal resistance junction-case Parameter max Value 3 Unit °C/W ELECTRICAL CHARACTERISTICS (Tj = 25 °C, Vs = ± 16V) Symbol Vs Id Iin hFE GV VCEsat Vos VINH Parameter Supply Voltage Quiescent Drain Current Input current DC current drain Voltage gain Saturation voltage (for each transistor) Input offset voltage Inhibit input voltage (pins 1-3) Vs = ± 16 V Vs = ± 16 V Vs = ± 16 V Vs = ± 16 V Io = 3A Vs = ± 16 V ON condition OFF condition RINH SR B Inhibit input resistance Slew rate Power bandwidth Vo = ± 10V, d = 1%, RL = 8Ω ± 1.
8 2.
0 30 200 Vi = 0V Io = 3A Io = 1.
5A 6000 30 200 10000 1 3.
5 0.
3 ± 0.
3 400 Test conditions Min.
Typ.
Max.
± 20 Unit V mA µA V V V KΩ V/µs KHZ APPLICATION INFORMATION Figure 1.
High slew-rate power operational amplifier (SR = 13V/µs) 3/6 L149 Figure 2.
Maximum saturation voltage vs.
output current.
Figure 3.
Current limiting characteristics.
Fi gure 4: Suppl y voltage rejection vs.
frequency.
Figure 5: Distorsion vs.
o...


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