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.
Loading...