SI6924AEDQ Datasheet, PDF (1/6 Pages) Vishay Siliconix – N-Channel 2.5-V (G-S) Battery Switch, ESD Protection

New Product
Si6924AEDQ
Vishay Siliconix
N-Channel 2.5-V (G-S) Battery Switch, ESD Protection
PRODUCT SUMMARY
V_DS (V)
28
r_DS(on) (W)
0.033 @ V_GS = 4.5 V
0.038 @ V_GS = 3.0 V
0.042 @ V_GS = 2.5 V
FEATURES
D Low r_DS(on)
D V_GS Max Rating: 14 V
D Exceeds 2-kV ESD Protection
I_D (A)
4.6
4.3
ESD Protected
4.1
2000 V
D 28-V V_DS Rated
D Symetrical Voltage Blocking (Off Voltage)
DESCRIPTION
The Si6924AEDQ is a dual n-channel MOSFET with ESD
protection and gate over-voltage protection circuitry
incorporated into the MOSFET. The device is designed for use
in Lithium Ion battery pack circuits. The common-drain
contsruction takes advantage of the typical battery pack
topology, allowing a further reduction of the device’s
on-resistance. The 2-stage input protection circuit is a unique
design, consisting of two stages of back-to-back zener diodes
separated by a resistor. The first stage diode is designed to
absorb most of the ESD energy. The second stage diode is
designed to protect the gate from any remaining ESD energy
and over-voltages above the gates inherent safe operating
range. The series resistor used to limit the current through the
second stage diode during over voltage conditions has a
maximum value which limits the input current to v 10 mA @
14 V and the maximum t_off to 12 ms. The Si6924AEDQ has
been optimized as a battery or load switch in Lithium Ion
applications with the advantage of both a 2.5-V r_DS(on) rating
and a safe 14-V gate-to-source maximum rating.
APPLICATION CIRCUITS
ESD and
Overvoltage
Protection
ESD and
Overvoltage
Protection
Battery Protection Circuit
*Thermal connection to drain pins is required to achieve specific performance.
FIGURE 1. Typical Use In a Lithium Ion Battery Pack
Document Number: 72215
S-03985—Rev. A, 13-May-03
D
R**
G
S
**R typical value is 3.3 kW by design.
See Typical Characteristics,
Gate-Current vs. Gate-Source Voltage, Page 3.
FIGURE 2. Input ESD and Overvoltage Protection Circuit.
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