AN6540 PANASONIC | Alldatasheet

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Technical content

The AN6540 is an integrated circuit designed for a 4- pin voltage regulator with adjustable rise time. An exter- nal capacitor allows any setting of output voltage rise time and noise reduction at power on, and are best suited for power circuits with current capacitance up to 240mA. It can be used up to the minimum input/output voltage dif- ference 0.3V(typ.). n Features

  • Low dropout voltage:0.3V(typ.)
  • Control of output voltage rise time
  • Internal short-circuit protection
  • Low temperature coefficient of output voltage AN6540 4-pin Voltage Regulator with Adjustable Rise Time n Block Diagram Unit:mm 12.5max. ø 3.1 2.0 4.0 3–1.0 0.7–0.2 0.5 –0.1 4-pin SIL Plastic Package with Fin (SSIP004-P-0000) 1.8 9.0min. 3.3max. 9.6 + 0.5 – 0.1 Pass Tr R 2 R 1 Q 1 Error Amp. Current Source Voltage Reference Rise Time Control Current Limiter

2 Common

4 Output

1 Input

V surge * PD Topr Tstg Supply voltage Supply surge voltage Power dissipation (Tc=25˚C) Operating ambient temperature Storage temperature V V W Parameter Symbol Rating Unit ■ Absolute Maximum Ratings (Ta=25˚C) –30 to +80 –40 to +150 * t=200ms Parameter Symbol ■ Electrical Characteristics (Ta=25˚C) Output voltage 8.1V O 8.9 V8.5V I=13.2V, IO =200mA Bias current Ibias 50 mA25V I=13.2V, IO =200mA Load regulation REG L –50 mVV I=13.2V, IO =0 to 200mA Line regulation REG IN –50 mVV I=9.5 to 16V, IO =100mA V I=13.2V, IO =100mA, Topr=–30 to+80˚C input/output voltage difference with input voltage 8.0V, I O =100mA V I=13.2V, IO =100mA, f=100Hz, ein=1V P–P Output voltage temperature coefficientΔV O /Ta %/˚C –0.01 Minimum input/output voltage differenceV DIF (min.) 0.6 V0.3 Ripple rejection ratio 50Regin dB Note) After the load short, return with I0=230mA or over. Maximum output current 240IO (max.) mAV I=13.2V Output short current 50IOS 160 mAV I=13.2V 600 Rise time 0.5tr 2s1C r=10µF–10% Condition min typ max Unit

0.1 0.2 0.3 0.5 100 Capacity Cr (µF) Rise Time tr (s) tr – Cr 0 20 40 60 80 100 120 140 160 Ambient Temperature Ta (˚C) Power Dissipation PD (W) PD –Ta 8.8 8.7 8.6 8.5 8.4 8.3 8.2 8.1 8.0 6 8 10 12 14 16 18 Input Voltage VI (V) Output Voltage VO (V) V O –V I 8.8 8.7 8.6 8.5 8.4 8.3 8.2 8.1 8.0 –40 –20 0 20 40 60 80 Ambient Temperature Ta (˚C) Output Voltage VO (V) V O –Ta 8.7 8.6 8.5 8.4 8.3 8.2 8.1 8.0 7.9 Input/Output Voltage Difference VDIF (V) Output Voltage VO (V) V O –V DIF Output Current IO (mA) Output Voltage VO (V) V O – IO 0 100 200 300 400 2 3 5 10 20 30 50 100 Infinite Heat Sink IO =0mA 100mA 200mA 5˚C/W Heat Sink 15˚C/W Heat Sink Without Heat Sink IO =0mA 100mA 200mA V I=13.2V IO =100mA V I=13.2V V OV I 1µF C r AN6540 Note) Choose the oscillation control capacitor 47µF which has a small capacitance reduction even at a low temperature. For example, use the tantalum capacitor. + 47µF n Basic Regulator Circuit