L4964 データシートの表示（PDF） - STMicroelectronics

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L4964

HIGH CURRENT SWITCHING REGULATOR

STMicroelectronics 

L4964

ELECTRICAL CHARACTERISTICS (continued)

(refer to the test circuits Tj = 25oC, Vi = 25V, unless otherwise specified)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit Fig.

ERROR AMPLIFIER (continued)

I10 Input Bias Current

V10 = 5.2V, S1 : B

Gv DC Open Loop Gain

V9 = 1V to 3V, S1 : A, S2 : C

OSCILLATOR AND PWM COMPARATOR

2

20

µA 6c

40

55

dB 6c

–I7 Input Bias Current of

PWM Comparator

V7 = 0.5V to 3.5V

–I11 Oscillator Source Current V11 = 2V, S1 : A, S2 : B

4

10

µA 6a

–

mA 6a

RESET

V12R

V12F

Rising Threshold Voltage

Vi = 9 V to 36 V, S1 : B, S2 : B

Falling Threshold Voltage

Vref

Vref

Vref

V 6d

- 150mV - 100mV - 50mV

4.75

Vref

Vref

V 6d

- 150mV - 100mV

V13D

V13H

Delay Threshold Voltage

Delay Threshold Voltage V12 = 5.3 V, S1 : A, S2 : B

Hysteresis

4.3

4.5

4.7

V 6d

100

mV 6d

V14S Output Saturation Volt. I14 = 5mA, V12 = 4.7V - S1, S2 : B

0.4

V 6d

I12 Input Bias Current

V12 = 0V to Vref, S1 : B, S2 : B

1

10

µA 6d

–I13 so Delay Source Current

I13 si Delay Sink Current

V13 = 3V, S1 : A, S2 : B

V12 = 5.3V

V12 = 4.7V

6d

60

110

150 µA

8

mA

I14 Output Leakage Current Vi = 36V, V12 = 5.3V, S1 : B, S2 : A

100

µA 6d

Figure 4 : Dynamic Test Circuit

C7, C8 : EKR (ROE)

L1 : L = 300 µH at 8 A

R = 500 mΩ

Core type : MAGNETICS 58930 - A2 MPP

N° turns : 43 Wire Gauge : 1 mm (18 AWG)

6/13

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