Diodes ZDS1009 User Manual

SM-8 COMPLEMENTARY CURRENT MIRROR

DESCRIPTION

The ZDS1009 current mirror has been developed
specifically for high side, current sense plus level
translation applications and as such will find a broad
applications base including battery charge
management, DC motor control and over current
monitoring functions. It is of particular interest for
current sense applications for feedback purposes in fast
battery chargers for Li-Ion cell based systems.

FEATURES

• Excellent Temperature Tracking Characteristics

• Compact Cost Effective Solution

• Simplifies Circuit Implementation

• Broad application base from

Single Cell Li-ion High Side Current sense chargers to
Multi-cell Lead-Acid systems

• Only 4 Connections required

ZDS1009

Thedevicefunctionsbysensing the voltagedeveloped
across an external (user defined) high side current
sense resistor, and by an arrangement of current
mirrors refer this sensed voltage, with or without
multiplication, to a low side referenced signal. This
signal can then be used, for example, to close the
control loop to a controller IC, for a DC-DC converter
providing charge to a battery.

SM-8

(8 LEAD SOT223)

SCHEMATIC DIAGRAM

CONNECTION DIAGRAM

For balance R3=R4

R1=R3=R4=100Ω

V

sensitivity = 100mV/A

sense

TYPICAL APPLICATION CIRCUIT

R

VIR

sense 2

R2=100mΩ

4

=

R

1

eg

ISSUE 2 - JANUARY 2000

1

ZDS1009

ABSOLUTE MAXIMUM RATINGS.

PARAMETER SYMBOL VALUE UNIT
Maximum Operating Voltage V
Maximum Voltage (E1-E2,E3-E4) V
Peak Pulse Current I
Continuous Current (E1-E4,E2-E3) I
Total Power Dissipation at T

= 25°C* P

amb

Operating and Storage Temperature Range T

* The power which can be dissipated assuming the device is mounted in a typical manner on a PCB with copper
equal to 2 inches square.

ELECTRICAL CHARACTERISTICS (at T

=25°C)

amb

y1-x1

E-E’
M
C

tot

j:Tstg

Parameter Symbol Min Max Unit Conditions

Breakdown Voltage BV
Breakdown Voltage BV
Breakdown Voltage BV
Breakdown Voltage BV
Breakdown Voltage BV
Breakdown Voltage BV
Breakdown Voltage BV
Leakage I
Leakage I
Leakage I
Leakage I
Leakage I
Leakage I
Leakage I

Y1
X1
Y1
E1
E2
E3
E4

Input Voltage V
Input Voltage V
Input Voltage V
Input Voltage V
Transfer

V

Characteristic
Transfer

V

Characteristic
Output Zero-Offset

V

Voltage

Y1-X1
X1-E1
Y1-E3
E1-Y1
E2-Y1
E3-X1
E4-X1

Y1-E2
Y1-E3
X1-E1
X1-E4
OUT

OUT

OFFSET

120 V

-30 V IX1=-10mA
30 V IY1=10mA

-12 V

-6 V
12 V
6VI

50 nA V

-10
10

µA
µA

-100 nA V

-100 nA V
100 nA V
100 nA V

-1.45 -1.65 V IY1=-1A

1.45 1.75 V IY1=1A,VX1=V

-1.45 -1.75 V IX1=-1A,VX1=V

1.45 1.65 V IX1=1A

0.99 1.01 V See Fig 1.VCC=5V

1 mV See Fig 1.VCC=5V

4mV

120 V

10 V

4A
1A
2W

-55 to +150 °C

I

=100µA

Y1

I

=-100µA

E1

I

=-100µA

E2

I

=100µA

E3

=100uA

E4

=100V

Y1-X1

V

=-30V, Vy1=V

X1-E1

V

=30V,VX1=V

Y1-E3

=-8V

E1-Y1

=-4V

E2-Y1

=8V

E3-X1

=4V

E4-X1

R1=R3=R4=100Ω,V

R1=R3=R4=100Ω,V
See Fig 2.V

R1=R3=R4=100Ω

E3

Y1

Y1

=5V,R2<1Ω

CC

E1

IN

IN

=1V

=5mV

ISSUE 2 - JANUARY 2000

2

TYPICAL CHARACTERISTICS

ZDS1009

1.20

+25°C

Vin = 0.1V

1.15

1.10

1.05

1.00

Voltage Transfer

0.95
51015202530350

R=10
R=100
R=1k

⍀

⍀

⍀

Vcc - Supply Voltage(V)

V oltage Transfer v Supply Voltage

1.00

0.90

0.80

0.70

0.60

Voltage Transfer

T=25°C

0.50
100

R=10k

⍀

R=1k

⍀

R=100

⍀

Vin = 1V
Vcc = 5V
VAC= 0.1V

1k 10k 100k 1M

Frequency (Hz)

Voltage Transfer v Frequency Response

1.3

1.2

1.1

1.0

R=10

0.9

0.8

Voltage Transfer

0.7
10m

⍀

R=100

⍀

R=1k

⍀

100m 1 10

Vin - Input Voltage (V)

Voltage Transfer v Input Voltage

180

200

Phase Change (Degrees)

220
240
260

280
300

320
340
360

T = 25°C

1k

R=10k

⍀

R=1k

⍀

R = 100

⍀

Vin = 1V

Vcc = 5V

VAC= 0.1V

10k 100k 1M

Frequency (Hz)

Phase Change v Frequency Response

Vcc=5V+25°C

TEST CIRCUITS

Figure 1
Transfer Characteristic Test Circuit

ISSUE 2 - JANUARY 2000

Figure 2
Output Zero-Offset Voltage Test Circuit

3

ZDS1009

TYPICAL CHARACTERISTICS

1.4

+25°C

Iout = 0.95Iin Iout = 0.95Iin

1.2

1.0

0.8

Voltage - (V)

0.6

0.4
100µA

NPN

1mA 10mA 100mA 1A

Iin - Input Current (A)

Input/CutoffVoltagevI

1.6

1.4

1.2

1.0

0.8

0.6

Voltage (V)

0.4

0.2

Vcutoff
Vin

0

-55

-35 -15 5 25 45 65 85 105 125

NPN

Temperature (°C)

Iin = 1mA
Iout = 0.95mA

Input/Output Voltage v Temperature

Vin
Vcutoff

in

1.4

+25°C

1.2

1.0

0.8

Voltage - (V)

0.6

0.4
100µ

PNP

1m 10m 100mA 1A

Iin - Input Current (A)

Input/Cutoff Voltage v Iin

1.6

1.4

1.2

1.0

0.8

0.6

Voltage (V)

0.4

0.2

Vcutoff

Vin

0

-60

-40 -20 0 20 40 60 80 100 120

PNP

Temperature (°C)

Iin = 1mA
Iout = 0.95mA

Input/Output Voltage v Temperature

Vin
Vcutoff

1.05

1.04

1.03

1.02

1.01

1.00

0.99

0.98

0.97

Current Transfer

0.96

0.95

+25°C

1m

NPN

1 10 100

Vce (V) - Collector-Emitter Voltage (V)

CurrentTransfervVce

10mA

100µA

1mA

4

1.05

25 C

1.04

1.03

1.02

1.01

1.00

0.99

0.98

0.97

Current Transfer

0.96

0.95

0.1

Vce - Collector-Emitter Voltage(V)

Current Transfer v Vce

PNP

10mA

1mA

100µA

110

ISSUE 2 - JANUARY 2000

PACKAGE DIMENSIONS

He

E

5

6

7

8

o

45°

4

3

e2

e1

2

1

Lp

ORDERING INFORMATION

DEVICE PARTMARKING
ZDS1009 S1009

ZDS1009

A

c

DIM Millimetres Inches

A1

Min Typ Max Min Typ Max

A - - 1.7 - - 0.067

A1 0.02 - 0.1 0.0008 - 0.004

b - 0.7 - - 0.028 -

c 0.24 - 0.32 0.009 - 0.013
D 6.3 - 6.7 0.248 - 0.264
E 3.3 - 3.7 0.130 - 0.145

e1 - 4.59 - - 0.180 ­e2 - 1.53 - - 0.060 -

He 6.7 - 7.3 0.264 - 0.287

Lp 0.9 - - 0.035 - -

α

β

- - 15° - - 15°

- 10° - - 10° -

Zetex plc.
Fields New Road, Chadderton, Oldham, OL9 8NP, United Kingdom.
Telephone: [phone] (Sales), (44)161 622 4444 (General Enquiries)
Fax: [phone]

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This publication is issued to provide outline information only which (unless agreed by the Company in writing) may not be used, applied or reproduced
for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. The Company
reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service.

ISSUE 2 - JANUARY 2000

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