L9610C STMicroelectronics, L9610C Datasheet
L9610C
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L9610C Summary of contents
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... Load dump protection ■ Load power limitation ■ External PowerMOS protection ■ Limited output voltage slew rate Description The L9610C is a monolithic integrated circuit working in PWM mode as controller of an external PowerMOS transistor in high side driver configuration. Table 1. Device summary Order code L9610C ...
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... Under and overvoltage sense with load dump protection . . . . . . . . . . . . . 7 4.5 Short circuit current regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.6 Bandgap voltage reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.7 Charge pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.1 Controlling a 120 W halogen lamp with the L9610C dimmer . . . . . . . . . . 11 6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2/15 L9610 ...
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L9610 1 Block diagram Figure 1. Block diagram 3/15 ...
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Pin description Figure 2. Pin connection (top view) Table 2. Pin functions Pin Name A capacitor connected between this pin and Out 1 INT voltage slew rate. Analog input controlling the PWM ratio. The operating range of the input ...
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L9610 3 Electrical specification 3.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol V Max. supply voltage S Transient peak supply voltage (R Load dump ≤ t ≤ 10 ms; τ rise Field decay ≤ ...
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Table 5. Electrical characteristcs (continued -40 ° ° < V amb Symbol Parameter K Oscillator freq. constant F Gate voltage slew rate K S constant K Protection time delay constant T V Sense input ...
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L9610 4 Functional description 4.1 Pulse width comparator A ground compatible comparator generates the PWM signal which controls the gate of the external PowerMOS. The slopes of the leading and trailing edges of the gate driving signal are defined by ...
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V and an external current limiting resistor R CLAMP abs. max. ratings is equal to 0.3 A. Therefore the maximum load dump voltage is given by: In this condition the gate of the PowerMOS is held at the GND pin ...
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L9610 4.5 Short circuit current regulation The maximum load current in the short circuit condition can be chosen by the value of the current sensing resistor R Two identical V compatible comparators are provided to realize the short circuit protection. ...
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Figure 5. Typical waveforms for short circuit current condition. 10/15 L9610 ...
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... BS BS 5.1 Controlling a 120 W halogen lamp with the L9610C dimmer The L9610C lamp dimmer is used to control the brightness of vehicle headlamps using H4 type lamps (see Figure lamps: closing the switch possible to reduce the average lamp voltage as desired: If pin 5 is connected to ground the average lamp voltage is constant, even for supply voltages in excess ...
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Figure 7. Application circuit with controlling a 120 W halogen lamp The sensing resistor R In normal conditions (V resistor must be 50 mV. The current limiter intervenes attwice the nominal current, I The timing capacitor C twice the duration ...
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L9610 6 Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ...
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Revision history Table 6. Document revision history Date 09-Oct-2000 18-Feb-2009 14/15 Revision 1 Initial release. Document reformatted. 2 Added Table 1: Device summary on page Updated Section 6: Package information on page L9610 Changes 1. 13. ...
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... L9610 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...