TK717 查看數據表（PDF） - Toko America Inc

零件编号

产品描述 (功能)

生产厂家

TK717

TK717xxS Series / LOW DROPOUT VOLTAGE REGULATOR

Toko America Inc  

TK717xxS

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

LOAD CURRENT STEP

RESPONSE 1

IOUT

0 mA to 30 mA STEP

VOUT

CL = 1 µF

10 µF

4.7 µF

2.2 µF

100 mV/Div

10 µS/Div

CN = 0.001 µF

IOUT

LOAD CURRENT STEP

RESPONSE 2

33 to 0 mA STEP

VOUT

CL = 1 µF

2.2 µF

20 mV/div

2 mS/div

4.7 µF

10 µF

CN = 0.001 µF

LINE VOLTAGE STEP RESPONSE

VOUT + 2

VIN

VOUT + 1

VOUT

CN =0.001 µF, CL = 1.0 µF

IOUT = 30mA

10 mV/Div

500 µS/DIV

ON/OFF Speed

The ON/OFF switching speed greatly depends on the values of the output and the noise bypass capacitors. The ON/OFF

switching speed improves when these capacitances are reduced. However, the Load transient and Line transient responses

deteriorate when CN and CL capacitances are small. In addition, the output noise increases. Toko recommends setting

CL = 0.22 mF and CN = 1000 pF when fast switching speeds are needed. Please increase each capacitance when low

noise is desired. Refer to the figures below.

OUTPUT VOLTAGE RESPONSE 1

OUTPUT VOLTAGE RESPONSE 2

VCONT

2.2 µF

1 µF

CL = 10 µF

4.7 µF

VCONT

100 p

0.001 µF

CL = 2.2 µF

VOUT

CN = 1000 pF

IOUT = 30 mA

0 10 20 30 40 50 60 70

TIME (µS)

Page 8

VOUT

0

CN = 0.01 µF

IOUT = 30 mA

200 400 600 800

TIME (µS)

January 2002 TOKO, Inc.

Share Link: