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M51995AFP データシート(PDF) 2 Page - Renesas Technology Corp

部品番号 M51995AFP
部品情報  Switching Regulator Control
PDF  41 Pages
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メーカー  RENESAS [Renesas Technology Corp]
ホームページ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M51995AFP データシート(HTML) 2 Page - Renesas Technology Corp

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M51995AP/AFP
REJ03D0835-0201 Rev.2.01 Nov 14, 2007
Page 2 of 40
Recommended Operating Conditions
• Supply voltage range: 12 to 36 V
• Operating frequency: less than 500 kHz
• Oscillator frequency setting resistance
 T-ON pin resistance R
ON: 10 k to 75 kΩ
 T-OFF pin resistance R
OFF: 2 k to 30 kΩ
Block Diagram
Under
voltage
lockout
Voltage
regulator
7.1 V
5.8 V
15.2 k
3 k
500
F/B
DET
GND
VCC
Latch
ON/OFF
OVP (shut down)
Oscillator capacitance
CF
Oscillator resistance
T-ON (ON duty)
Oscillator resistance
T-OFF (OFF duty)
VF
CLM+
+Current limit
CLM
−
−Current limit
CT
Intermittent operation
determine capacitance
Collector
VOUT
Emitter
6 S
1 S
1 S
1 S
PWM
Comparator
PWM
latch
+
−
OP AMP
2.5 V
Intermittent
action
Intermittent
action and
OSC control
−Current
limit latch
+Current
limit latch
Oscillator
(triangle)



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