ncp1512 ON Semiconductor, ncp1512 Datasheet
ncp1512
Related parts for ncp1512
ncp1512 Summary of contents
Page 1
... PWM Buck Converter with a Very Low Iq During Low Load Conditions The NCP1512 is a tri-mode regulator that operates either as a Synchronized PWM Buck Converter, PWM Buck Converter with internal oscillator Pulsed Switching Regulator synchronization signal is present, the NCP1512 operates as a current mode PWM converter with synchronous rectification ...
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... Shutdown Sync V out L 6 out 10 m Figure 1. Applications Circuit Low Iq Pulsed Cntrl Control Sync CB0 Figure 2. Block Diagram NCP1512 PWM/ PFM Q2 Cntrl GNDP GNDA CB1 SHD http://onsemi.com 2 CB0 CB1 V bat FB V out C out ...
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... Ref, Sync, CB, and SHD pins. Feedback Voltage from the Output of the Power Supply. Enable for Switching Regulator. This Pin is Active High to enable the NCP1512. The SHD Pin has an internal pull down resistor to force the converter off if this pin is not connected to the external circuit. ...
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... Sync PWM Mode Characteristics Switching P-FET Current Limit Duty Cycle Minimum On Time Rdson Switching P-FET and N_FET Switching P-FET and N-FET Leakage Current Output Overvoltage Threshold NCP1512 = 3 3 Fsyn = 600 kHz 50% Duty Cycle square wave for PWM in A Symbol Iq PWM ...
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... Set = 2.5 V CB0 = L, CB1 = L out Feedback Voltage Accuracy, V Set = 2.85 V CB0 = L, CB1 = H out Feedback Voltage Accuracy, V Set = 3.0 V CB0 = H, CB1 = H out Feedback Voltage Accuracy, V Set = 3.3 V CB0 = H CB1 = L out NCP1512 ( Fsyn = 600 kHz 50% Duty Cycle square wave in A Symbol Min V 2.425 out V 2 ...
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... PWM is optimized for 100 mA with a maximum current supply in excess of 300 mA for the 2.5 to 5.2 input voltage range. If the Sync Pin is held low, the NCP1512 changes into the Pulsed mode. The Pulsed function assures the user of an extremely low input current and greatly reduced quiescent current when the users system sleep mode ...
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... TIME (m) Figure 4. Waveforms During PWM Operation Pulsed Mode During low-level current output, NCP1512 can enter a low current consumption mode when the Sync Pin is held low. This mode will typically have a free running frequency and an output voltage ripple similar to a PFM mode. The ...
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... Efficiency in PWM Mode in 100 3 2.5 V out 85 2. 100 200 300 I (mA) out Figure 9. I versus Efficiency in PWM Mode out NCP1512 100 800 1000 0.01 Figure 6. PWM versus Pulse Efficiency ...
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... V (V) SHD Figure 13. Input Current versus Voltage for the Shutdown Pin 2 1 (V) CB Figure 15. Input Current versus Voltage for the CB Pins NCP1512 3.4 3.2 3 3.0 V out out 2.8 2.6 2 100 2 1 ...
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... Shutdown Pin The Shutdown Pin enables the operation of the device. The Shutdown Pin has an internal pull down resistor to force the NCP1512 into the off mode if this pin is floating due to the external circuit. The Shutdown Pin threshold is fixed as noted in the Electrical Characteristics table. ...
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... 0. 0.03 C RECOMMENDED PCB FOOTPRINT 0.250 0.280 http://onsemi.com NCP1512 FC SUFFIX ISSUE O NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. COPLANARITY APPLIES TO SPHERICAL CROWNS OF SOLDER BALLS. MILLIMETERS DIM MIN A 0.540 A1 0.210 A2 0.330 ...
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... N. American Technical Support: 800- 282- 9855 Toll Free USA/Canada NCP1512 JAPAN: ON Semiconductor, Japan Customer Focus Center Kamimeguro, Meguro- ku, Tokyo, Japan 153 - 0051 Phone: 81- 3- 5773- 3850 ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 12 NCP1512/D ...