L165H中文资料

1/9

L165

July 2003 s OUTPUT CURRENT UP TO 3A s LARGE COMMON-MODE AND DIFFERENTIAL MODE RANGES s SOA PROTECTION

s THERMAL PROTECTION s

± 18V SUPPLY

DESCRIPTION

The L165 is a monolithic integrated circuit in Pen-tawatt? package, intended for use as power oper-ational amplifier in a wide range of applications,including servo amplifiers and power supplies. The high gain and high output power capability provide superiore performance wherever an operational amplifier/power booster combination is required.

3A POWER OPERATIONAL AMPLIFIER

APPLICATION CIRCUITS Figure 1. Gain > 10.

Figure 2. Unity gain configuration.

L165

2/9

ABSOLUTE MAXIMUM RATINGS

PIN CONNECTION (Top view)

SCHEMATIC DIAGRAM

THERMAL DATA

Symbol Parameter

Value Unit V S Supply voltage

± 18V V 5 V

4Upper power transistor V CE 36V V 4

V 3Lower power transistor V CE 36V

V i Input voltage

V S V j Differential input voltage

± 15V I o Peak output current (internally limited) 3.5A P tot Power dissipation at T case = 90°C 20W T stg , T j

Storage and junction temperature

-40 to 150

°C Symbol Parameter

Value Unit R th-j-case

Thermal resistance junction-case

max

3

°C/W

L165

ELECTRICAL CHARACTERISTCS (V S = ± 15 V, T j = 25 °C unless otherwise specified)

Symbol Parameter Test Condition Min. Typ.Max.Unit V S Supply Voltage± 6± 18V

I d Quiescent Drain Current V S = ±18 V4060mA

I b Input Bias Current0.21μA

V os Input Offset Voltage± 2± 10mV

I os Input Offset Current± 20± 200nA

SR Slew-rate G v= 108V/μs

G v = 1 (°)6

V o Output Voltage Swing f = 1kHz

I p = 0.3A

I p = 3A 27

24

V pp

f = 10kHz I p = 0.3A I p = 3A 27

24

V pp

R Input Resistance (pin 1) f = 1 KHz100500K?G v Voltage Gain (open loop)80dB e N Input Noise Voltage B = 10 to 10 000 Hz2μV i N Input Noise Current f = 1 KHz100pA CMR Common-mode Rejection R g≤ 10 K?; G V = 30 dB70dB SVR Supply Voltage Rejection R g = 22 K?; V ripple = 0.5 Vrms

f ripple = 100 Hz

G v= 10

G v= 10060

40

dB

dB

Efficiency f = 1 kHz; R L = 4?

I p = 1.6 A; P o = 5W I p = 1.6 A; P o = 18W 70

60

%

%

T sd Thermal Shut-down Case Temperature P tot = 12 W110°C

P tot = 6 W130°C

3/9

L165

4/9

Figure 3. Open loop frequency response.

Figure 4. Closed loop frequency response

(circuit of figure 2).

Figure 5. Large signal frequency response.

Figure 6. Maximum output current vs. voltage

[VCE] across each output transistor.

Figure 7. Safe operating area and collector

characteristics of the protected power transistor.

Figure 8. Maximum allowable power

dissipation vs. ambient temperature.

5/9

L165

Figure 9. Bidirectional DC motor control with TTL/CMOS/μP compatible inputs.

Figure 10. Motor current control circuit with external power transistors (I motor > 3.5A).

Must be V S2 ≥

V S1; E1, E2 = logic inputs; V S1 = logic supply voltage

D1 to D4:V F ≤ 1.2 @ I = 4A

t rr ≤ 500ns

Note : The inputvoltage level is compatible with L291 (5-BIT D/A converter).The transfer function is: I

M V i

-----R4Rx R3------------------=

L165

6/9

Figure 11. High current tracking regulator.

Figure 12. Bidirectional speed control of DC motor (Compensation networks not shown).

A: for ± 18 ≤ V

i ± 32

Note: V z must be chosen in order to verify

2 V i - V z ≤ 36V B: for V i ≤ ±18V

D1 to D4:V F ≤ 1.2 @ I = 2A

t rr ≤ 500ns

7/9

L165

Figure 13. Split power supply.

Figure 14. Power squarewave oscillator with independent adjustments for frequency and duty-cycle.

P1 : duty-cycle adjust

P2 : frequency adjust (f = 700 Hz with C1 = 10 nF , P2 = 100K ?, f = 25 Hz with C1 = 10 nF , P2 = 0)

L165

8/9

L165 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted

by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not

authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

STMicroelectronics acknowledges the trademarks of all companies referred to in this document.

The ST logo is a registered trademark of STMicroelectronics

?2003 STMicroelectronics - All Rights Reserved

STMicroelectronics GROUP OF COMPANIES

Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.

https://www.360docs.net/doc/86579195.html,

9/9

相关主题
相关文档
最新文档