Datasheet

V
O(OC)
2V/div
I
O(OUT)
1A/div
t − Time − 2ms/div
V
O(OC)
2V/div
I
O(OUT)
1A/div
t − Time − 2ms/div
POWER-SUPPLY CONSIDERATIONS
IN
OC1
EN1
OC2
2
8
5
7
0.1 Fm 22 Fm
0.1 Fm 22 Fm
Load
Load
OUT1
OUT2
PowerSupply
2.7Vto5.5V
6
EN2
3
4
GND
0.1 Fm
TPS2062A
1
DETAILED DESCRIPTION
OVERVIEW
TPS2062A
TPS2066A
www.ti.com ........................................................................................................................................... SLVS798F – JANUARY 2008 – REVISED NOVEMBER 2008
PARAMETER MEASUREMENT INFORMATION (continued)
Figure 8. 2- Ω Load Connected to Enabled Device Figure 9. 1- Ω Load Connected to Enabled Device
Figure 10. Typical Application
The devices are current-limited, power distribution switches using N-channel MOSFETs for applications where
short-circuits or heavy capacitive loads will be encountered. These devices have a minimum fixed current-limit
threshold above 1.1 A allowing for continuous operation up to 1 A per channel. Overtemperature protection is an
addtional device shutdown feature. Each device incorporates an internal charge pump and gate drive circuitry
necessary to drive the N-channel MOSFETs. The charge pump supplies power to the driver circuit and provides
the necessary voltage to pull the gate of the MOSFET above the source. The charge pump operates from input
voltages as low as 2.7 V and requires little supply current. The driver controls the gate voltage of the power
switch. The driver incorporates circuitry that controls the rise and fall times of the output voltage to provide
"soft-start" and to limit large current and voltage surges.
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Product Folder Link(s): TPS2062A TPS2066A