LT1158CS LINER [Linear Technology], LT1158CS Datasheet
LT1158CS
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LT1158CS Summary of contents
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FEATURES Drives Gate of Top Side MOSFET Above V Operates at Supply Voltages from 5V to 30V 150ns Transition Times Driving 3000pF Over 500mA Peak Driver Current Adaptive Non-Overlap Gate Drives Continuous Current Limit Protection Auto Shutdown and Retry Capability ...
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... T GATE FB LT1158CN SOURCE LT1158IN + 5 12 SENSE – SENSE + GATE DR N PACKAGE 16-LEAD PLASTIC DIP = 70 C/W JA LT1158CS TOP VIEW LT1158IS 1 16 BOOST + GATE GATE SOURCE + 5 12 SENSE – SENSE + 7 10 ...
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... Note calculated from the ambient temperature T J dissipation P according to the following formulas: D LT1158IN, LT1158CN C/ LT1158IS, LT1158CS 110 C/ TYPICAL PERFORMANCE CHARACTERISTICS DC Supply Current 14 V13 = ...
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LT1158 W U TYPICAL PERFORMANCE CHARACTERISTICS Dynamic Supply Current 40 50% DUTY CYCLE + 12V 10000pF GATE 3000pF GATE 1000pF GATE 100 ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS Top Gate Rise Time 400 350 C = 10000pF GATE 300 250 200 C = 3000pF GATE 150 100 C = 1000pF GATE SUPPLY ...
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LT1158 U U FUNCTIONAL DIAGRA + V BOOST BIAS BIAS 3 GEN ENABLE 4 7.5V 2.7V – 1.2V FAULT 5 7. INPUT – R 1.4V GND 7 ...
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TEST CIRCUIT 150 OPERATIO (Refer to Functional Diagram) The LT1158 self-enables via an internal 25 A pull-up on the enable pin 4. When pin ...
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LT1158 U OPERATIO (Refer to Functional Diagram) 13 goes low in PWM operation, and is maintained by the charge pump when the top MOSFET is on DC. A regulated boost driver at pin 1 employs a source-referenced 15V clamp that ...
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U U APPLICATIONS INFORMATION high frequency oscillations –– consult manufacturer’s rec- ommendations. If individual gate decoupling resistors are used, the gate feedback pins can be connected to any one of the gates. Driving multiple MOSFETs in parallel may restrict the ...
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LT1158 U U APPLICATIONS INFORMATION Ugly Transient Issues In PWM applications the drain current of the top MOSFET is a square wave at the input frequency and duty cycle. To prevent large voltage transients at the top drain, a low ...
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U U APPLICATIONS INFORMATION 100 90 FIGURE 12 CIRCUIT V = 12V 1.5 2.0 2.5 0 0.5 1.0 OUTPUT CURRENT (A) Figure 4. Typical Efficiency Curve for Step-Down Regulator with Synchronous Switch One fundamental difference in ...
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LT1158 U U APPLICATIONS INFORMATION Low Current Shutdown The LT1158 may be shutdown to a current level of 2mA by pulling the enable pin 4 low. In this state both the top and bottom MOSFETs are actively held off against ...
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U U APPLICATIONS INFORMATION from times the final value will be present for a few s, followed by an interval in which I spike is normally well within the safe operating area (SOA) of the MOSFET, but ...
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LT1158 U U APPLICATIONS INFORMATION Note that for the first event only, t mately twice the above value since C all the way from its quiescent voltage. Allowable values for R are from zero to 10k. F 7.5V 1.15V 25 ...
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U U APPLICATIONS INFORMATION from a true short. This is done by using the current limit to control cold filament current in conjunction with the self- protection circuit of Figure 9. The reduced cold filament current also extends the life ...
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LT1158 U TYPICAL APPLICATIONS 16k 0.33µF 0. 200pF 2 7 LT1431 3 6 4.99k 3.3k 1000pF CMOS 24k 555 2.90V 3.05V 3.30V ...
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U TYPICAL APPLICATIONS 4.7k 0. EXT SYNC 30k 25kHz 2.2nF LT3525 27k ...
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LT1158 U TYPICAL APPLICATIONS + 10 F 1N4148 STOP (FREE RUN PWM Figure 15. High Efficiency 6-Cell NiCd Protected Motor Drive LT1158 ENABLE FAULT INPUT 5V SHUTDOWN PWM CONTROLS LT1158 INPUTS 18 BAT85 1 16 BOOST DR ...
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U TYPICAL APPLICATIONS 1 BOOST 0. BIAS 4 ENABLE A ENABLE + FAULT A FAULT 6 INPUT INPUT A 7 GND 8 B GATE FB 1 BOOST ...
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LT1158 U TYPICAL APPLICATIONS + ON/OFF Figure 18. High Current Lamp Driver with Short-Circuit Protection PACKAGE DESCRIPTION 0.300 – 0.325 0.130 ± 0.005 (7.620 – 8.255) (3.302 ± 0.127) 0.015 (0.381) MIN 0.009 – 0.015 ...