TSC TS2026 Technical data

TS2026 1-7 2005/11 rev. A

TS2026

Dual-Channel Power Distribution Switch

Pin assignment:

1. ENA 5. OUTB

2. FLGA 6. GND

3. FLGB 7. IN

4. ENB 8. OUTA

140mΩ max. on-resistance per channel

2.7V to 5.5V operating range

Under voltage lockout

General Description

The TS2026 is high-side MOSFET switches optimized for general-purpose power distribution requiring circuit protection.

The TS2026 are internally current limited and have thermal shutdown that protects the device and load. When a thermal

shutdown fault occurs, the output is latched off until the faulty load is removed. Removing that load or toggling the enable

input will reset the device output. Both device employ soft-start circuitry that minimized inrush current in application

where highly capacitive loads are employed. A fault status output flag is asserted during over current and thermal
shutdown conditions. Transient faults are internally filtered.

Features

 140mΩ max. on-resistance per channel

 2.7V to 5.5V operating range

 500mA min. continuous current per channel

 Short-circuit protection with thermal shutdown

 Thermal isolated channels.

 Fault status flag with 3ms filter eliminates false

assertions.

 Under voltage lockout

 Reverse current flow blocking (no “body diode”)

 Logic-compatible inputs

 Soft-start circuit

 Low quiescent current

Ordering Information

Part No.

Operating Temp.

(Ambient)

Package

TS2026CS

-20 ~ +85 oC

SOP-8

Applications

 USB peripherals

 General purpose power switching

 ACPI power distribution

 Notebook PCs

 PDAs

 PC card hot swap

Absolute Maximum Rating

Supply Voltage

VIN

+6

V

Fault Flag Voltage

V

FLG

+6

V

Fault Flag Current

I

FLG

25

mA

Output Voltage

V

OUT

+6

o

C

Output Current

I

OUT

Internal Limited

Enable input

IEN

-0.3 ~ +3

V

Storage Temperature

T

STG

-65 ~ +150

oC

查询TS2026供应商

TS2026

2-7 2005/11 rev. A

Block Diagram

Pin Description

Pin Number

Pin Name

Pin Function

1

ENA

Switch A Enable (Input): Logic-compatible enable input. Active high (H) or active
low (L)

2

FLGA

Fault Flag A (Output): Active-low, open-drain output. Indicated over current or
thermal shutdown conditions. Over current conditions mush last longer than tD in
order to assert FLGA

3

FLGB

Fault Flag B (Output): Active-low, open-drain output. Low Indicated over current
or thermal shutdown conditions. Over current conditions mush last longer than tP
in order to assert FLGA

4

ENB

Switch B Enable (Input): Logic-compatible enable input. Active-high (H) or
active-low

5

OUTB

Switch B (Output)

6

GND

Ground

7

IN

Input: Switch and logic supply input

8

OUTA

Switch A (Output)

Typical Application

TS2026

3-7 2005/11 rev. A

Electrical Characteristics

Vin=5V, TA = 25 oC, bold values indicate -40 oC ≤ TA ≤ 85oC unless noted

Parameter

Symbol

Condition

Min.

Typ.

Max.

Units

TS2026-L, V

ENA=VENB

≥2.4V

(switch off), OUT = open

--

0.75 5 A

Supply Current

IDD

TS2026-H, V

ENA=VENB

≤0.8V

(switch on), OUT = open

--

100

160

A

Low-to-high transition

--

1.7

2.4

V
Enable Input threshold
High-to-low transition

0.8

1.455

--

V

Enable Input Hysteresis

VEN

--

250

--

mV

Enable Input Current

V

ENA

= 0V to 5.5V

-1

0.01 1 A

Enable Input Capacitance

IEN

-- 1 --

pF

VIN= 5V, I

OUT

= 500mA

--

90

140

mΩ

Switch Resistance Note 4

R

DS(ON)

VIN= 3.3V, I

OUT

= 500mA

--

100

160

mΩ

Output Leakage Current

TS2026-H, V

ENX

≤0.8V

TS2026-L, V

ENX

≥2.4V

--

--

10

A

Output Turn-on Delay

tON

RL=10Ω, CL=1F,

see “Timing Diagrams”

--

1.3 5 mS

Output Turn-on Rise Time

tR

RL=10Ω, CL=1F,

see “Timing Diagrams”

--

1.15

4.9

mS

Output Turn-off Delay

t

OFF

RL=10Ω, CL=1F,

see “Timing Diagrams”

--

35

100

S

Output Turn-off Fall Time

tF

RL=10Ω, CL=1F,

see “Timing Diagrams”

--

32

100

S

Short-Circuit Output Current

I

LIMIT

V

OUT

= 0V, enable into

short-circuit

0.5

0.9

1.25

A

Current –Limit Threshold

Ramped load applied to output

--

1.0

1.25

A

Short-Circuit Response Time

V

OUT

= 0V to I

OUT

= I

LIMIT

(short applied to output)

--

20

--

S

VIN=5V, apply V

OUT

=0V

Until FLG low

1.5 3 7

mS

Over current Flag Response

Delay

tD

VIN=3.3V, apply V

OUT

=0V

Until FLG low

TBD 3 --

mS

VIN rising

2.2

2.4

2.7

V

Under voltage Lockout

Threshold

VIN falling

2.0

2.15

2.5

V

IL =10mA, VIN =5V

--

10

25

Ω
Error Flag Output Resistance

IL =10mA, VIN =3.3V

--

15

40

Ω

Error Flag Off Current

V

FLAG

=5V

--

--

10

A

TJ increasing, each switch

--

140

-- oC

TJ decreasing, each switch

--

120

-- oC

TJ increasing, both switch

--

160

-- oC

Over temperature Threshold

Note 5

TJ decreasing, both switch

--

150

-- oC

Note 1. Exceeding the absolute maximum rating may damage the device.

Note 2. The device is not guaranteed to function outside its operating rating.

Note 3. Devices are ESD sensitive. Handing precautions recommended.

Note 4. For maintenance RDS≤140mΩ assembly to make gold conductors in diameter 50m.

Note 5. If there is a fault on one channel, that channel will shut down when the die reaches approximately 140 oC. If the

die reaches approximately 160 oC, both channels will shut down, even if neither channel is in current limit.