m62281fp Renesas Electronics Corporation., m62281fp Datasheet

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m62281fp

Manufacturer Part Number
m62281fp
Description
General Purpose Current Mode Pwm Control Ic
Manufacturer
Renesas Electronics Corporation.
Datasheet

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M62281FP
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M62281FP
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M62281P/FP
General Purpose Current Mode PWM Control IC
Description
M62281P/FP is designed as a high speed current mode PWM control IC.
This small 10 pin package contains many functions and protection circuits allowing simpler peripheral circuit and
compact set design.
This IC can operate high speed switching (700 kHz Max.) with high speed current sense comparator and current
limiting circuit.
Features
Application
Switching Regulator
DC/DC converter
REJ03D0840-0201 Rev.2.01 Nov 14, 2007
Page 1 of 12
700 kHz applicable to MOS-FET
CURRENT SENSE terminal separate from CLM terminal makes SMPS strong in noise.
High speed pulse-by-pulse current limiting
Timer type latch protection circuit with OVP (external reset is possible)
Soft start operation is possible (with dead time control)
Built-in OP Amp for feedback control (photo coupler can be driven)
Small start-up current 180 A
Start-up voltage 12.5 V, Stop voltage 8.3 V
Output current Io(peak) = 1 A
Totempole output
REJ03D0840-0201
Nov 14, 2007
Rev.2.01

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m62281fp Summary of contents

Page 1

M62281P/FP General Purpose Current Mode PWM Control IC Description M62281P/FP is designed as a high speed current mode PWM control IC. This small 10 pin package contains many functions and protection circuits allowing simpler peripheral circuit and compact set design. ...

Page 2

... V CC UVLO CT Timer (OVP) latch − 2 SOFT OUT (Duty set-up) Note: GND terminal is connected to emitter terminal as M62281FP in IC inside. And V terminal is connected to collector terminal as M62281FP in IC inside. CC REJ03D0840-0201 Rev.2.01 Nov 14, 2007 Page CLM CLM S comp. CLM Latch 0 comp ...

Page 3

... Supply voltage Output terminal current CT terminal supply voltage EA IN terminal supply voltage CLM terminal supply voltage CURRENT SENSE terminal supply voltage Power dissipation Thermal derating Operating temperature Storage temperature REJ03D0840-0201 Rev.2.01 Nov 14, 2007 Page M62281FP OUT GND 2 9 CLM ...

Page 4

M62281P/FP Electrical Characteristics Block Item All Supply voltage range device Operation start-up voltage Operation stop voltage Start-up and stop Voltage difference Stand-by current Operating current Timer latch circuit current CT CT term. “H” threshold voltage CT term. “L” threshold voltage ...

Page 5

M62281P/FP Block Item Output Output low voltage Output high voltage Output voltage rise time Output voltage fall time Function Description and Application EA IN, EA OUT Terminal Circuit for EA OUT terminal is connected to constant current load (370 A ...

Page 6

M62281P/FP In the case that feed forward system by photo-coupler is applied, following two methods are available. One is the method by error amp figure 3-1, the other is by the direct connection to photo-coupler as in figure ...

Page 7

M62281P/FP 3.0 2.5 2.0 1.5 1.0 0.5 0 Figure 4 Supply Current vs. Supply Voltage Characteristics (at Timer Latch) Even if the timer function is not needed, latch function operates, that is, IC becomes in operative when the voltage of ...

Page 8

M62281P/FP SOFT (Duty Set-Up) Terminal The voltage of SOFT terminal determines the maximum duty. Maximum duty can be set by connecting the resistor as in figure 6 because the constant current compensated for temperature flows out of this terminal. And ...

Page 9

M62281P/FP Figure 7-2 Peripheral Circuit of CLM When The Detected Voltage is High 1000 pF to 22000 pF is recommended for C detection sensitivity is not influenced by the current flown out from CLM terminal. Non-inductive resistor is recommended for ...

Page 10

M62281P/FP Attention for heat generation Although the absolute maximum rating of ambient temperature is spelled out always annoying to specify the location this temperature refers to because the power dissipation generated locally in switching regulator ...

Page 11

M62281P/FP M62281 Application Circuit (Feed-Forward) circuit prevention current Rush filter Line REJ03D0840-0201 Rev.2.01 Nov 14, 2007 Page SOFT C DUTY R ...

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M62281P/FP Package Dimensions JEITA Package Code RENESAS Code P-SOP10-5.7x6.8-1.27 PRSP0010DB Index mark * JEITA Package Code RENESAS Code P-DIP14-6.3x19-2.54 PRDP0014AA SEATING PLANE REJ03D0840-0201 Rev.2.01 Nov 14, 2007 Page ...

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Notes: 1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or completeness of the information contained ...

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