SC4210AEVB View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
SC4210AEVB Datasheet PDF : 11 Pages
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POWER MANAGEMENT
Pin Configuration
TOP VIEW
VDD
1
CAP
2
GND
3
COMP
4
8
CS
7
CT
6
FB
5
VOUT
(MSOP-8)
SC4210A
Ordering Information
Part Number (1)
Package
SC4210AIMSTRT(2)
MSOP-8
SC4210AEVB
EVALUATION BOARD
Notes:
(1) Only available in tape and reel packaging. A reel
contains 2500 devices.
(2) Lead free product. This product is fully WEEE and
RoHS compliant.
Pin Descriptions
Pin
Pin Name Pin Function
1
VDD
The system input voltage is connected to this point. VDD must be above 1.75V. VDD also
acts as one side of the current sense amplifier and comparator.
2
CAP
The output of the charge pump circuit. A capacitor is connected between this pin and GND to
provide a floating bias voltage for an N-Channel MOSFET gate drive. A minimum of a 0.01µF
ceramic capacitor is recommended. CAP can be directly connected to an external regulated
source, in which case the external voltage will be the source for driving the
N-Channel MOSFET.
3
GND
Ground reference for device.
4
COMP The common output of the transconductance error amplifier and current sense amplifier. It is
used for compensating the small signal characteristics of the voltage and current loop (when the
current sense amplifier is active in over-current mode). Also, it can be utilized as an ON/OFF
node; if pulled to GND the circuit will shutdown; if left floating, it will enable normal operation.
5
VOUT This pin directly drives the gate of the external N-MOSFET pass element. The typical output
impedance of this pin is 2.5kΩ
6
FB
The inverting terminal of the voltage error amplifier; used to feedback the output voltage for
comparison with the internal reference voltage.
7
CT
The input to the duty cycle timer circuit. A capacitor is connected from this pin to GND, setting
the maximum ON time of the over-current protection circuits.
8
CS
The negative current sense input signal. This pin should be connected through a low noise path
to the low side of the current sense resistor.
2004 Semtech Corp.
4
www.semtech.com
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