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APPLICATION MANUAL

Negative-input Negative-output Regulator IC

TK721xxCS

CONTENTS

1 . DESCRIPTION

2 . FEATURES

3 . APPLICATIONS

4 . PIN CONFIGURATION

5 . PACKAGE OUTLINE

5. ORDERING INFORMATION

6 . BLOCK DIAGRAM

7 . ABSOLUTE MAXIMUM RATINGS

8 . ELECTRICAL CHARACTERISTICS

9 . TEST CIRCUIT

10 . TYPICAL CHARACTERISTICS

11 . PIN DESCRIPTION

12 . APPLICATIONS INFORMATION

12-2. ESR Stability

12-3.

Operating Region and Power Dissipation

12-4 Application hint

13 . NOTES

14. OFFICES

GC3-K020B

Page 1

TK721xxCS

Negative-input Negative-output Regulator IC

TK721xxCS

1. DESCRIPTION

TK721xxCS series is a negative-input negative-output

regulator IC using silicon monolithic bipolar structure

which can supply 150mA output current.

The output voltage can be set from -2.0 to -9.5V, which is

trimmed in high accuracy.

TK721xxCS is supplied with ON/OFF terminal and noise

reduction terminal. The ON/OFF control can be

controlled directly with positive logic or CPU.

Moreover, TK721xxCS is provided with short-circuit

protection and thermal shutdown.

4. PIN CONFIGURATION

Top View

Cont

Vout

VEE

GND

2. FEATURES

High Output Voltage Accuracy(±2.0% or ±60 mV)

ON/OFF control available (High OFF)

Built-in

short-circuit protection and thermal shutdown.

Guarantee 150mA output current(

200mA peak)

Ceramic capacitor available for application

5. PACKAGE OUTLINE

SOT23-5

Mark

0.7

1.0

1.6

±0.2

Battery Powered Systems

DSC, CCD bias, GaAs bias.

0.4

−0.05

0.95

+0.10

0.95

Reference Mount Pad

0.1

2.9

±0.2

1.3max

1.1

±0.1

0.15

+0.10

−0.05

0 ~0.1

(0.3)

0.1

2.8

±0.2

GC3-K020B

2.4

3. APPLICATIONS

Page 2

TK721xxCS

5. ORDERING INFORMATION

Package

SOT23-5

Vout

-2.0

-2.5

-3.0

-3.5

-4.0

-4.5

-5.0

-5.5

-6.0

-6.5

-7.0

-7.5

-8.0

-8.5

-9.0

-9.5

Part Number

TK72120CS

TK72125CS

TK72130CS

TK72135CS

TK72140CS

TK72145CS

TK72150CS

TK72155CS

TK72160CS

TK72165CS

TK72170CS

TK72175CS

TK72180CS

TK72185CS

TK72190CS

TK72195CS

Marking

K20

K25

K30

K35

K40

K45

K50

K55

K60

K65

K70

K75

K80

K85

K90

K95

For other voltages, please contact the TOKO sales office.

GC3-K020B

Page 3

TK721xxCS

6. BLOCK DIAGRAM

Cont

90k

Vout

VEE

Bandgap

Reference

Over Heat &

Over Current

Protection

GND

Control:Low Level On

7. ABSOLUTE MAXIMUM RATINGS

=25°C

Parameter

Supply Voltage

Control pin Voltage

Power Dissipation

(SOT23-5 Simple substance)

Storage Temperature Range

Operating Temperature Range

Operating Voltage Range

Output short-circuit current

Symbol

Vin

Vcont

stg

Ishort

Rating

-20

-0.4 ~ +5

500

-55 ~ +150

-40 ~ 85

-19

300

Units

Conditions

|Vin|+|Vcont|≤20V

|Vin|+|Vcont|≤19V

must be decreased at the rate of 4mW/°C

for operation above 25°C.

|Vin|+|Vcont|≤19V

Over Current Protection

Absolute maximum ratings are limits beyond which damage to the device may occur.

When the operation exceeds this standard, quality can not be guaranteed.

GC3-K020B

Page 4

TK721xxCS

8. ELECTRICAL CHARACTERISTICS

Vin=Vout

TYP

-1.5V, Ta=25

Parameter

Vout

Line Regulation

Load Regulation

Dropout Voltage *1

Supply Current

Standby Current

Peak Output Current

Control Current

Control Voltage

Symbol

Vout

LinReg

LoaReg

Vdrop

Icc

Istandby

Iout

PEAK

Icont

Vcont

Value

MIN

TYP

MAX

Refer to TABLE 1

0.29

0.50

0.48

0.80

0.66

1.10

155

250

200

280

0.3

1.5

Unit

µA

Condition

Iout=5mA

∆Vin=5V

Iout=5mA~50mA

Iout=5mA~100mA

Iout=5mA~150mA

Iout=50mA

Iout=100mA

Iout=150mA

Iout=0mA

Vout Off State

When Vout drops 10%

Vcont=+1.8V

Vout ON State

Vout OFF State

*1 For Vout≥-3.0 no regulations

TABLE 1

Vout

MIN

-2.060

-2.560

-3.060

-3.570

-4.080

-4.590

-5.100

-5.610

-6.120

-6.630

-7.140

-7.650

-8.160

-8.670

-9.180

-9.690

TYP

-2.000

-2.500

-3.000

-3.500

-4.000

-4.500

-5.000

-5.500

-6.000

-6.500

-7.000

-7.500

-8.000

-8.500

-9.000

-9.500

MAX

-1.940

-2.440

-2.940

-3.430

-3.920

-4.410

-4.900

-5.390

-5.880

-6.370

-6.860

-7.350

-7.840

-8.330

-8.820

-9.310

Iout=50mA

TYP

MAX

LoaReg

Iout=100mA

TYP

MAX

104

111

117

124

Iout=150mA

TYP

MAX

100

110

120

130

140

150

160

170

180

190

Part Number

TK72120CS

TK72125CS

TK72130CS

TK72135CS

TK72140CS

TK72145CS

TK72150CS

TK72155CS

TK72160CS

TK72165CS

TK72170CS

TK72175CS

TK72180CS

TK72185CS

TK72190CS

TK72195CS

GC3-K020B

Page 5

参数对比

与TK72145CS相近的元器件有：TK72130CS、TK72175CS、TK72180CS、TK72185CS、TK72150CS、TK72155CS、TK72120CS、TK72125CS。描述及对比如下：

型号	TK72145CS	TK72130CS	TK72175CS	TK72180CS	TK72185CS	TK72150CS	TK72155CS	TK72120CS	TK72125CS
描述	Fixed Negative Standard Regulator, 4.5V, PDSO5, SOT-23, 5 PIN	Fixed Negative Standard Regulator, 3V, PDSO5, SOT-23, 5 PIN	Fixed Negative Standard Regulator, 7.5V, PDSO5, SOT-23, 5 PIN	Fixed Negative Standard Regulator, 8V, PDSO5, SOT-23, 5 PIN	Fixed Negative Standard Regulator, 8.5V, PDSO5, SOT-23, 5 PIN	Fixed Negative Standard Regulator, 5V, PDSO5, SOT-23, 5 PIN	Fixed Negative Standard Regulator, 5.5V, PDSO5, SOT-23, 5 PIN	Fixed Negative Standard Regulator, 2V, PDSO5, SOT-23, 5 PIN	Fixed Negative Standard Regulator, 2.5V, PDSO5, SOT-23, 5 PIN
是否无铅	含铅	含铅	含铅	含铅	含铅	含铅	含铅	含铅	含铅
是否Rohs认证	不符合	不符合	不符合	不符合	不符合	不符合	不符合	不符合	不符合
零件包装代码	SOT-23	SOT-23	SOT-23	SOT-23	SOT-23	SOT-23	SOT-23	SOT-23	SOT-23
包装说明	LSSOP,	LSSOP,	LSSOP,	LSSOP,	LSSOP,	LSSOP,	LSSOP,	LSSOP,	LSSOP,
针数	5	5	5	5	5	5	5	5	5
Reach Compliance Code	unknown	unknown	unknown	unknown	unknown	unknown	unknown	unknown	unknown
ECCN代码	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
JESD-30 代码	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5
长度	2.9 mm	2.9 mm	2.9 mm	2.9 mm	2.9 mm	2.9 mm	2.9 mm	2.9 mm	2.9 mm
功能数量	1	1	1	1	1	1	1	1	1
端子数量	5	5	5	5	5	5	5	5	5
最大输出电流 1	0.15 A	0.15 A	0.15 A	0.15 A	0.15 A	0.15 A	0.15 A	0.15 A	0.15 A
最大输出电压 1	4.41 V	2.94 V	7.35 V	7.84 V	8.33 V	4.9 V	5.39 V	1.94 V	2.44 V
最小输出电压 1	4.59 V	3.06 V	7.65 V	8.16 V	8.67 V	5.1 V	5.61 V	2.06 V	2.56 V
标称输出电压 1	4.5 V	3 V	7.5 V	8 V	8.5 V	5 V	5.5 V	2 V	2.5 V
封装主体材料	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	LSSOP	LSSOP	LSSOP	LSSOP	LSSOP	LSSOP	LSSOP	LSSOP	LSSOP
封装形状	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
封装形式	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
认证状态	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
调节器类型	FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR	FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR	FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR	FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR	FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR	FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR	FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR	FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR	FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR
座面最大高度	1.3 mm	1.3 mm	1.3 mm	1.3 mm	1.3 mm	1.3 mm	1.3 mm	1.3 mm	1.3 mm
表面贴装	YES	YES	YES	YES	YES	YES	YES	YES	YES
端子形式	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
端子节距	0.95 mm	0.95 mm	0.95 mm	0.95 mm	0.95 mm	0.95 mm	0.95 mm	0.95 mm	0.95 mm
端子位置	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
处于峰值回流温度下的最长时间	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
宽度	1.6 mm	1.6 mm	1.6 mm	1.6 mm	1.6 mm	1.6 mm	1.6 mm	1.6 mm	1.6 mm
厂商名称	-	-	TOKO, INC.	TOKO, INC.	TOKO, INC.	TOKO, INC.	TOKO, INC.	TOKO, INC.	TOKO, INC.