AN78LXX PANASONIC | Alldatasheet

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1Publication date: Jaunuary 2002 SFF00005CEB AN78Lxx/AN78LxxM Series 3-pin positive output voltage regulator (100 mA type) I Overview The AN78Lxx series and the AN78LxxM series are 3- pin fixed positive output type monolithic voltage regula- tor. A stabilized fixed output voltage is obtained from an unstable DC input voltage without using any external parts. 12 types of fixed output voltage are available; 4V, 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V, 20V and 24V. They can be used widely as power circuits with a current capacity of up to 100mA. I Features

  • No external components
  • Output voltage: 4V, 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V, 20V, 24V
  • Built-in overcurrent limit circuit
  • Built-in thermal overload protection circuit SSIP003-P-0000 AN78Lxx series Unit: mm AN78LxxM series Unit: mm I Block Diagram (AN78Lxx series) 1: Output 2: Common 3: Input 1: Input 2: Output 3: Common HSIP003-P-0000B 5.0±0.2 5.1±0.213.5±0.5 (1.0)(1.0) 4.0±0.2 2.3±0.2 0.6±0.15 0.43+0.1 –0.05 2.54 0.43+0.1 –0.05 213 2.6 typ. 1.6 max. 1.8 max. 4.6 max. 3.0 1.5 1.5 321 4.25 max. 2.6 max.0.8 min. Input (3)Pass Tr Output (1) Common (2) Starter Voltage Reference Current Source Error Amp. Thermal Protection RSC Current Limiter Note) The number in ( ) shows the pin number for the AN78LxxM series. Note) The packages (SSIP003-P-0000 and HSIP003- P-0000B) of this product will be changed to lead-free type (SSIP003-P-0000S and HSIP003-P-0000Q). See the new package di- mensions section later of this datasheet.

2 SFF00005CEB

I Absolute Maximum Ratings at Ta = 25°C I Electrical Characteristics at Ta = 25°C

  • AN78L04, AN78L04M (4V type) VI PD Topr Tstg V V mW 35 *1 40 *2 650 *3 −30 to +80 −55 to +150 −55 to +125 Input voltage Power dissipation Operating ambient temperature Storage temperature AN78Lxx series AN78LxxM series *1 AN78L04/M, AN78L05/M, AN78L06/M, AN78L07/M, AN78L08/M, AN78L09/M, AN78L10/M, AN78L12/M, AN78L15/M *2 AN78L18/M, AN78L20/M, AN78L24/M *3 Follow the derating curve. When Tj exceeds 150°C, the internal circuit cuts off the output. AN78LxxM series is mounted on a standard board (glass epoxy: 20mm × 20mm × t1.7mm with Cu foil of 1cm2 or more). Parameter Symbol Rating Unit VO 4.16 V4Tj = 25°C VO VVI = 6.5 to 19V , IO = 1 to 70mA REGIN 145 mV50VI = 6.5 to 19V , Tj = 25°C mV REGL mV10IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 7 to 19V , Tj = 25°C mA2Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 9V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L04) and Tj = 0 to 100°C (AN78L04M) IBias mAVI = 7 to 19V , Tj = 25°C∆IBias(IN) mA∆IBias(L) µV40 IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 4.2 3.84 3.8 RR VI = 7 to 17V , IO = 40mA, f = 120Hz V1.7Tj = 25°CVDIF(min) mA140IO(Short) mV/°C− 0.6 Tj = 25°C, VI = 35V 4.5 ∆VO/Ta IO = 5mA, Tj = 0 to 125°C Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to input Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit

I Electrical Characteristics at Ta = 25°C (continued)

  • AN78L05, AN78L05M (5V type)
  • AN78L06, AN78L06M (6V type) VO 5.2 V5Tj = 25°C VO VVI = 7.5 to 20V , IO = 1 to 70mA REGIN 150 mV55VI = 7.5 to 20V , Tj = 25°C mV REGL mV11IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 8 to 20V , Tj = 25°C mA2Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 10V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L05) and Tj = 0 to 100°C (AN78L05M) IBias mAVI = 8 to 20V , Tj = 25°C∆IBias(IN) mA∆IBias(L) µV40 IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 100 5.25 4.8 4.75 RR VI = 8 to 18V , IO = 40mA, f = 120Hz V1.7Tj = 25°CVDIF(min) mA140IO(Short) mV/°C− 0.65 Tj = 25°C, VI = 35V ∆VO/Ta IO = 5mA, Tj = 0 to 125°C Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input VO 6.24 V6Tj = 25°C VO VVI = 8.5 to 21V , IO = 1 to 70mA REGIN 155 mV60VI = 8.5 to 21V , Tj = 25°C mV REGL mV12IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 9 to 21V , Tj = 25°C mA2Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 11V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L06) and Tj = 0 to 100°C (AN78L06M) IBias mAVI = 9 to 21V , Tj = 25°C mA µV50 IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 105 6.3 5.76 5.7 RR VI = 9 to 19V , IO = 40mA, f = 120Hz V1.7Tj = 25°C mA140 mV/°C− 0.7 Tj = 25°C, VI = 35V 5.5 IO = 5mA, Tj = 0 to 125°C ∆IBias(IN) ∆IBias(L) VDIF(min) IO(Short) ∆VO/Ta Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to input Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit

4 SFF00005CEB

I Electrical Characteristics at Ta = 25°C (continued)

  • AN78L07, AN78L07M (7V type)
  • AN78L08, AN78L08M (8V type) VO 7.28 V7Tj = 25°C VO VVI = 9.5 to 22V , IO = 1 to 70mA REGIN 165 mV70VI = 9.5 to 22V , Tj = 25°C mV REGL mV13IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 10 to 22V , Tj = 25°C mA2Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 12V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L07) and Tj = 0 to 100°C (AN78L07M) IBias mAVI = 10 to 22V , Tj = 25°C∆IBias(IN) mA∆IBias(L) µV50 IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 115 7.35 6.72 6.65 RR VI = 10 to 20V , IO = 40mA, f = 120Hz V1.7Tj = 25°CVDIF(min) mA140IO(Short) mV/°C− 0.75 Tj = 25°C, VI = 35V ∆VO/Ta IO = 5mA, Tj = 0 to 125°C Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input VO 8.3 V8Tj = 25°C VO VVI = 10.5 to 23V , IO = 1 to 70mA REGIN 175 mV80VI = 10.5 to 23V , Tj = 25°C mV REGL mV15IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 11 to 23V , Tj = 25°C mA2Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 14V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L08) and Tj = 0 to 100°C (AN78L08M) IBias mAVI = 11 to 23V , Tj = 25°C∆IBias(IN) mA∆IBias(L) µV60 IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 125 8.4 7.7 7.6 RR VI = 11 to 21V , IO = 40mA, f = 120Hz V1.7Tj = 25°CVDIF(min) mA140IO(Short) mV/°C− 0.8 Tj = 25°C, VI = 35V ∆VO/Ta IO = 5mA, Tj = 0 to 125°C Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input

I Electrical Characteristics at Ta = 25°C (continued)

  • AN78L09, AN78L09M (9V type)
  • AN78L10, AN78L10M (10V type) VO 9.35 V9Tj = 25°C VO VVI = 11.5 to 24V, IO = 1 to 70mA REGIN 190 mV90VI = 11.5 to 24V, Tj = 25°C mV REGL mV16IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 12 to 24V, Tj = 25°C mA2Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 15V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L09) and Tj = 0 to 100°C (AN78L09M) IBias mAVI = 12 to 24V, Tj = 25°C∆IBias(IN) mA∆IBias(L) µV65 IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 140 9.45 8.64 8.55 RR VI = 12 to 22V, IO = 40mA, f = 120Hz V1.7Tj = 25°CVDIF(min) mA140IO(Short) mV/°C− 0.85 Tj = 25°C, VI = 35V ∆VO/Ta IO = 5mA, Tj = 0 to 125°C Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input VO 10.4 V10 VO VVI = 12.5 to 25V, IO = 1 to 70mA REGIN 210 mV100VI = 12.5 to 25V, Tj = 25°C mV REGL mV17IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 13 to 25V, Tj = 25°C mA2Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 16V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L10) and Tj = 0 to 100°C (AN78L10M) IBias mAVI = 13 to 25V, Tj = 25°C mA µV70 IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 160 10.5 9.6 9.5 RR VI = 13 to 23V, IO = 40mA, f = 120Hz V1.7Tj = 25°C mA140 mV/°C− 0.9 Tj = 25°C, VI = 35V IO = 5mA, Tj = 0 to 125°C Tj = 25°C ∆IBias(IN) ∆IBias(L) VDIF(min) IO(Short) ∆VO/Ta Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input

6 SFF00005CEB

I Electrical Characteristics at Ta = 25°C (continued)

  • AN78L12, AN78L12M (12V type)
  • AN78L15, AN78L15M (15V type) VO 12.5 V12Tj = 25°C VO VVI = 14.5 to 27V , IO = 1 to 70mA REGIN 250 mV120VI = 14.5 to 27V , Tj = 25°C mV REGL mV20IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 15 to 27V , Tj = 25°C mA2Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 19V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L12) and Tj = 0 to 100°C (AN78L12M) 100 IBias mAVI = 15 to 27V , Tj = 25°C mA IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 200 12.6 100 3.5 11.5 11.4 RR VI = 15 to 25V , IO = 40mA, f = 120Hz V1.7Tj = 25°C mA140 mV/°C−1 Tj = 25°C, VI = 35V IO = 5mA, Tj = 0 to 125°C µV ∆IBias(IN) ∆IBias(L) VDIF(min) IO(Short) ∆VO/Ta Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input VO 15.6 V15 VO VVI = 17.5 to 30V , IO = 1 to 70mA REGIN 300 mV130VI = 17.5 to 30V , Tj = 25°C mV REGL mV25IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 18 to 30V , Tj = 25°C mA2Tj = 25°C 110 IBias mAVI = 18 to 30V , Tj = 25°C mA IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 250 15.75 150 3.5 14.4 14.25 RR VI = 18 to 28V , IO = 40mA, f = 120Hz V1.7Tj = 25°C mA140 −1.3 Tj = 25°C, VI = 35V IO = 5mA, Tj = 0 to 125°C Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 23V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L15) and Tj = 0 to 100°C (AN78L15M) mV/°C µV ∆IBias(IN) ∆IBias(L) VDIF(min) IO(Short) ∆VO/Ta Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input

I Electrical Characteristics at Ta = 25°C (continued)

  • AN78L18, AN78L18M (18V type)
  • AN78L20, AN78L20M (20V type) VO 18.7 V18 VO VVI = 20.5 to 33V , IO = 1 to 70mA REGIN 300 mV45VI = 20.5 to 33V , Tj = 25°C mV REGL mV30IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 21 to 33V , Tj = 25°C mA2Tj = 25°C IBias mAVI = 21 to 33V , Tj = 25°C mA 150 IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 250 18.9 170 3.5 17.3 17.1 RR VI = 21 to 31V , IO = 40mA, f = 120Hz V1.7Tj = 25°C mA140 −1.5 Tj = 25°C, VI = 35V IO = 5mA, Tj = 0 to 125°C Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 27V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L18) and Tj = 0 to 100°C (AN78L18M) mV/°C µV ∆IBias(IN) ∆IBias(L) VDIF(min) IO(Short) ∆VO/Ta Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input VO 20.8 V20 VO VVI = 22.5 to 35V , IO = 1 to 70mA REGIN 300 mV50VI = 22.5 to 35V , Tj = 25°C mV REGL mV35IO = 1 to 100mA, Tj = 25°C mVIO = 1 to 40mA, Tj = 25°C VI = 23 to 35V , Tj = 25°C mA2Tj = 25°C IBias mAVI = 23 to 35V , Tj = 25°C mA 170 IO = 1 to 40mA, Tj = 25°C Vno dB f = 10Hz to 100kHz 0.1 250 180 3.5 19.2 RR VI = 23 to 33V , IO = 40mA, f = 120Hz V1.7Tj = 25°C mA140 −1.7 Tj = 25°C, VI = 35V IO = 5mA, Tj = 0 to 125°C Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 29V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L20) and Tj = 0 to 100°C (AN78L20M) mV/°C µV ∆IBias(IN) ∆IBias(L) VDIF(min) IO(Short) ∆VO/Ta Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input

8 SFF00005CEB

I Electrical Characteristics at Ta = 25°C (continued)

  • AN78L24, AN78L24M (24V type) VO 25 V24 VO VVI = 26.5 to 39V , IO = 1 to 70mA REGIN 300 mV60VI = 26.5 to 39V , Tj = 25ˆ mV REGL mV40IO = 1 to 100mA, Tj = 25ˆ mVIO = 1 to 40mA, Tj = 25ˆ VI = 27 to 39V , Tj = 25ˆ mA2Tj = 25°C IBias mAVI = 27 to 39V , Tj = 25ˆ mA 200 IO = 1 to 40mA, Tj = 25ˆ Vno dB f = 10Hz to 100kHz 0.1 250 25.2 200 100 3.5 22.8 RR VI = 27 to 37V , IO = 40mA, f = 120Hz V1.7Tj = 25ˆ mA140 Tj = 25ˆ, VI = 35V IO = 5mA, Tj = 0 to 125ˆ Tj = 25°C Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = 33V , IO = 40mA, CI = 0.33µF, CO = 0.1µF, Tj = 0 to 125°C (AN78L24) and Tj = 0 to 100°C (AN78L24M) mV/°C µV ∆IBias(IN) ∆IBias(L) VDIF(min) IO(Short) ∆VO/Ta Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Parameter Symbol Conditions Min Typ Max Unit Bias current fluctuation to input

V I = 8 to 18V IO = 40mA 1k 10k 100k Frequency f (Hz) Ripple rejection RR (dB) RR  f 024 AN78L05 68 1 0 Time t (µs) −10 −20 01 0 2 0 AN78L05 30 40 50 0.2 0.1 Bias current IBias (mA) IBias  Ta 3.0 2.5 2.0 1.5 1.0 0.5 0ʵ25 0 25 50 75 100 125 VIN = 28V 10V18V AN78L05 IO = 5mA 1.0 0.8 0.6 0.4 0.2 0 20 40 60 80 100 120 140 160 PD  Ta (AN78Lxx series) 2.5 2.0 1.5 1.0 0.5 0 25 50 75 100 125 VDIF(min)  Tj IO = 100mA 70mA 40mA 1mA 1.0 0.8 0.6 0.4 0.2 0 20 40 60 80 100 120 140 160 PD  Ta (AN78LxxM series) Ambient temperature Ta (°C) Ambient temperature Ta (°C) Power dissipation PD (W) Ambient temperature Ta (°C) Power dissipation PD (W)Independent IC without a heat sink R th(j-a) = 190°C/W PD = 658mW (25°C) Mounted on standard board (glass epoxy: 20mm × 20mm × t1.7mm with Cu foil of 1cm2 or more) Junction temperature Tj (°C) Minimum input/output voltage difference VDIF(min) (V) Output voltage fluctuation (mV) Input voltage VI (V) Input transient response Time t (µs) Output voltage fluctuation (V) Output current IO (A) Load transient response

10 SFF00005CEB

  1. Cautions for a basic circuit CI: When a wiring from a smoothing circuit to a three-pin regulator is long, it is likely to oscillate at output. A capacitor of 0.1µF to 0.47µF should be connected near an input pin. CO: When any sudden change of load current is likely to occur, connect an electrolytic capacitor of 10µF to 100µF to improve a transitional response of output voltage. Di: Normally unnecessary. But add it in the case that there is a residual voltage at the output capacitor Co even after switching off the supply power because a current is likely to flow into an output pin of the IC and damage the IC. 2. Other caution items 1) Short-circuit between the input pin and GND pin If the input pin is short-circuitted to GND or is cut off when a large capacitance capacitor has been con- nected to the IC's load, a voltage of a capacitor con- nected to an output pin is applied between input/out- put of the IC and this likely results in damage of the IC. It is necessary, therefore, to connect a diode, as shown in figure 2, to counter the reverse bias between input/output pins. 2) Floating of GND pin If a GND pin is made floating in an operating mode, an unstabilized input voltage is outputted. In this case, a thermal protection circuit inside the IC does not normally operate. In this state, if the load is short-circuited or overloaded, it is likely to damage the IC. I Application Circuit Examples Figure 1 CO VO CI VI Di 1 3 In GND Out Figure 2 CO ग़ྗ1 3 I Basic Regulator Circuit COCI Input Output AN78Lxx CI is necessary when the input line is long. CO improves the transient response. VO VO 0.33µF 0.1µF VI VI IO IBias VO = VO' + IBias + ɹ R1 Note) VO varies due to sample to sample variation of IBias . Never fail to adjust individually with R1 . VO' 20Ω AN78Lxx AN78Lxx 1 2 3 R2 VO'

I New Package Dimensions (Unit: mm)

  • SSIP003-P-0000S (Lead-free package)
  • HSIP003-P-0000Q (Lead-free package) (1.00) (1.00) 5.00±0.20 4.00±0.20 2.30±0.200.60±0.15 0.40±0.10 5.00±0.20 13.30±0.50 0.40+0.10 -0.05 1.27 1.27 0.42+0.10 -0.05 1.00+0.10 -0.20 0.40+0.10 -0.05 4.00+0.25 -0.20 2.50±0.10 4.50±0.10 1.55±0.20 2.65±0.10 (0.40) 1.50±0.10 (0.75)3.00 1.50 M0.15 0.10 0.50+0.10 -0.05 0.40+0.10 -0.05

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2001 MAR