SI1040X Datasheet, PDF (1/5 Pages) Vishay Siliconix – Load Switch with Level-Shift

New Product
Si1040X
Vishay Siliconix
Load Switch with Level-Shift
PRODUCT SUMMARY
V_DS2 (V)
r_DS(on) (W)
1.8 to 8
0.625 @ V_IN = 4.5 V
0.890 @ V_IN = 2.5 V
1.25 @ V_IN = 1.8 V
I_D (A)
"0.43
"0.36
"0.3
FEATURES
D TrenchFETr Power MOSFET
D 1.8 to 8-V Input
D 1.5 to 8-V Logic Level Control
D Smallest LITTLE FOOTR Package: 1.6 mm x 1.6 mm
D 2000-V ESD Protection On Input Switch, V_ON/OFF
D Adjustable Slew-Rate
MARKING CODE
Marking Code
O
Pin 1
Identifier
WL
Lot Traceability
and Date Code
Part Number Code
DESCRIPTION
The Si1040X includes a p- and n-channel MOSFET in a single
SC89-6 package. The low on-resistance p-channel
TrenchFET is tailored for use as a load switch. The n-channel,
with an external resistor, can be used as a level-shift to drive
the p-channel load-switch. The n-channel MOSFET has
internal ESD protection and can be driven by logic signals as
low as 1.5-V. The Si1040X operates on supply lines from 1.8
to 8 V, and can drive loads up to 0.43 A.
APPLICATION CIRCUITS
Si1040X
V_IN
R1
4
Q2
6
2, 3
C1
6
5
ON/OFF
C_o
Q1
C_i
1
R2
R2
V_OUT
LOAD
GND
Switching Variation
R2 @ V_IN = 2.5 V, R1 = 20 kW
20
t_f
16
I_L = 0.36 A
12 ^VON/OFF ^{= 3 V}
C_i = 10 mF
C_o = 1 mF
8
t_r
4
t_d(off)
t_d(on)
0
0
2
4
6
8
10
R2 (kW)
Note: For R2 switching variations with other V_IN/R1
combinations See Typical Characteristics
COMPONENTS
R1
Pull-Up Resistor
Typical 10 kW to 1 mW*
R2
Optional Slew-Rate Control
Typical 0 to 100 kW*
C1
Optional Slew-Rate Control
Typical 1000 pF
*Minimum R1 value should be at least 10 x R2 to ensure Q1 turn-on.
Document Number: 71809
S-20008—Rev. A, 04-Mar-02
The Si1040X is ideally suited for high-side load switching in
portable applications. The integrated n-channel level-shift
device saves space by reducing external components. The
slew rate is set externally so that rise-times can be tailored to
different load types.
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