L296P STMicroelectronics, L296P Datasheet
L296P
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L296P Summary of contents
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... ORDERING NUMBERS : L296 (Vertical) L296HT (Horizontal) L296P (Vertical) L296PHT (Horizontal) The L296 and L296P are mounted in a 15-lead Mul- tiwatt plastic power package and requires very few external components. Efficient operation at switching frequencies up to 200 KHz allows a reduction in the size and cost of external filter components ...
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... L296 - L296P PIN FUNCTIONS N Name 1 CROWBAR INPUT Voltage Sense Input for Crowbar Overvoltage Protection. Normally connected to the feedback input thus triggering the SCR when V also monitor the input and a voltage divider can be added to increase the threshold. Connected to ground when SCR not used. ...
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... CIRCUIT OPERATION (refer to the block diagram) The L296 and L296P are monolithic stepdown switching regulators providing output voltages from 5.1V to 40V and delivering 4A. The regulation loop consists of a sawtooth oscillator, error amplifier, comparator and the output stage. An error signal is produced by comparing the output voltage with a precise 5 ...
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... L296 - L296P Figure 2 : Soft Start Waveforms Figure 3 : Current Limiter Waveforms ABSOLUTE MAXIMUM RATINGS Symbol V Input Voltage (pin – V Input to Output Voltage Difference Output DC Voltage 2 Output Peak Voltage 0.1 sec f = 200KHz Voltage at Pins Voltage at Pin Voltage at Pins and Voltage at Pins 10 and 6 10 ...
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... V o ref V = 12V 100Hz i rms ripple ref 46V 125 ref o Note ( 46V 0V 46V 3V L296 - L296P Value Max. 3 Max. 35 Min. Typ. Max ref ref 5.1 5.2 0.4 2 3.2 1.3 2.1 4.5 7.5 to 36V ref = V o ref 5 7 2.5 4.5 60 100 100 115 ...
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... Output Saturation Voltage 15 I Input Bias Current 1 – I Output Source Current 15 6/22 Test Conditions 46V 0V 46V 0V 0. 4.7V 100 5.3V 100 5.3V 4.7V 5.2V 6.4V L296P 3V 0. 46V 5.3V 16mA 4.7V, S1 ref 46V 5.3V 46V 5.4V 5mA 6V 46V 6.5V ...
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... 300 Core type : MAGNETICS 58930 - A2 MPP N° turns : 43 Wire Gauge : 1 mm (18 AWG) COGEMA 946044 (*) Minimum suggested value ( avoid oscillations. Ripple consideration leads to typical value of 1000 F or higher. Figure 5 : PC. Board and Component Layout of the Circuit of Figure 4 (1:1 scale) L296 - L296P 7/22 ...
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... L296 - L296P Figure Test Circuits. Figure 6a. Figure 6c Set V FOR Change V to obtain Figure 6d. 8/22 Figure 6b. ...
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... Figure 11 : Reference Voltage (pin 10) vs. V (see fig. 4). Figure 8 : Quienscent Drain Current vs. Supply Voltage (100 % Duty Cycle see fig. 6a). Figure 10 : Quiescent Drain Current vs. Junction Temperature (100 % Duty Cycle - see fig. 6a). Figure 12 : Reference Voltage (pin 10) vs. Junction I Temperature (see fig. 4). L296 - L296P 9/22 ...
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... L296 - L296P Figure 13 : Open Loop Frequency and Phase Response of Error Amplifier (see fig. 6c). Figure 15 : Switching Frequency vs. Junction Temperature (see fig. 4). Figure 17 : Line Transient Response (see fig. 4). 10/22 Figure 14 : Switching Frequency vs. Input Voltage (see fig. 4). Figure 16 : Switching Frequency vs. R1 (see fig. 4). ...
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... Figure 21 : Dropout Voltage Between Pin 3 and Pin 2 vs. Junction Temperature. Figure 23 : Power Dissipation (device only) vs. Input Voltage. Figure 20 : Dropout Voltage Between Pin 3 and Pin 2 vs. Current at Pin 2. Figure 22 : Power Dissipation Derating Curve. Figure 24 : Power Dissipation (device only) vs. Input voltage. L296 - L296P 11/22 ...
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... L296 - L296P Figure 25 : Power Dissipation (device only) vs. Output Voltage (see fig. 4). Figure 27 : Voltage and Current Waveforms at Pin 2 (see fig. 4). Figure 29 : Efficiency vs. Output Voltage. 12/22 Figure 26 : Power Dissipation (device only) vs. Output Voltage (see fig. 4). Figure 28 : Efficiency vs. Output Current. Figure 30 : Efficiency vs. Output Voltage. ...
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... Figure 31 : Current Limiting Threshold vs. R (L296P only). Figure 33 : Current Limiting Threshold vs. Supply Voltage. Figure 32 : Current Limiting Threshold vs. Junction pin 4 Temperature. L296 - L296P 13/22 ...
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... L296 - L296P APPLICATION INFORMATION Figure 34 : Typical Application Circuit. (*) Minimum value ( avoid oscillations ; ripple consideration leads to typical value of 1000 F or higher L1 : 58930 - MPP COGEMA 946044 ; GUP 20 COGEMA 946045 SUGGESTED INDUCTOR (L1) Core Type Magnetics 58930 – A2MPP Thomson GUP Siemens EC 35/17/10 (B6633& – G0500 – X127) ...
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... Sets Switching Frequency 1 nF Soft Start 1 F Frequency Compensation High Frequency – Compensation Output Filter – 100 H Crowbar Protection Recirculation Diode L296 - L296P Notes Max min R1/R2 1 220k 5 If output voltage is sensed R1 and R2 may be limited and pin 12 connected to pin 10. 100k 22k May be omitted and pin 6 grounded if inhibit not used ...
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... L296 - L296P Figure Minimal 5.1 V Fixed Regulator. Very Few Components are Required. Figure V/10 A Power Supply. 16/22 ...
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... Figure 38 : Programmable Power Supply 5 max. (min. load current = 100 mA) o ripple 20 mV load regulation ( line regulation (220 and Figure 39 : Preregulator for Distributed Supplies. (*) L2 and C2 are necessary to reduce the switching frequency spikes L296 - L296P 17/22 ...
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... L296 - L296P Figure Multiple Supplies Several L296s can be Synchronized As Shown. Figure 5.1 V/15 V/24 V Multiple Supply. Note the Synchronization of the Three L296s. 18/22 Figure 41 : Voltage Sensing for Remote Load. ...
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... Moreover, the power fail and reset delay time are automatically locked to the soft-start. Soft-start and delayed reset are thus two sequential functions. The hysteresis resistor should be In the range of aboit 100k and the pull-up resistor 2.2k . Figure 46 tDIS ( s) 200 300 600 L296 - L296P V - 100mV O REF 19/22 ...
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... L296 - L296P mm DIM. MIN. TYP. MAX 2. 0.49 0.55 0.019 F 0.66 0.75 0.026 G 1.02 1.27 1.52 0.040 G1 17.53 17.78 18.03 0.690 H1 19.6 0.772 H2 20.2 L 21.9 22.2 22.5 0.862 L1 21.7 22.1 22.5 0.854 L2 17.65 18.1 0.695 L3 17.25 17.5 17.75 0.679 L4 10.3 10 ...
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... Dia1 3.65 3.85 0.144 inch TYP. MAX. MECHANICAL DATA 0.197 0.104 0.063 0.022 0.030 0.050 0.055 0.700 0.705 0.795 0.810 0.710 0.100 0.689 0.699 0.421 0.429 0.208 0.094 0.114 0.102 0.102 0.152 L296 - L296P OUTLINE AND Multiwatt15 H 21/22 ...
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... L296 - L296P Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the conse- quences 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. Specification mentioned in this publication are subject to change without notice ...