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PDF SC33020H Data sheet ( Hoja de datos )
| Número de pieza | SC33020H | |
| Descripción | 2A Load Switch | |
| Fabricantes | Semtech | |
| Logotipo |  |
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POWER MANAGEMENT
Features
Input Voltage Range – 1.6V to 5.5V
2A Continuous Output Current
Ultra Low Ron – 32mΩ
Reverse Current Blocking
Low Quiescent Current – 1μA
Low Shutdown Current – 0.3µA
Internal Soft Start
Hardened ESD Protection 4kV
Package: CSP – 0.9mm x 0.9mm 4-Bump
Applications
Wearable Electronics
Tablet PCs, eReaders
Smartphones
Notebook PCs, Ultrabooks
Battery Powered Equipment
Other Portable Devices
SC33020H
2A Load Switch with
Reverse Current Blocking
Description
The SC33020H is an integrated 2A Load Switch with
reverse current blocking. It operates from an 1.6V to 5.5V
input supply. The SC33020H leaves the output node float-
ing when the part is disabled.
The device provides extremely low 32mOhm ON resis-
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from the output through the device to the input supply
rail. Whenever Vout to VIN voltage exceeds the reverse
blocking threshold, reverse blocking is activated regard-
less of the IC enable state either (ON or OFF).
The SC33020H is offered in a tiny 0.9mm x 0.9mm x
0.60mm, 4 Bump CSP package. The SC33020H has an
operating temperature range of -40°C to +85 °C.
Typical Application Circuit
SUPPLY
1µF
ENABLE
VIN VOUT
SC33020H
EN GND
LOAD
1µF
Rev. 2.0
© 2015 Semtech Corporation
1 page  
SC33020H
Pin Descriptions
Pin#
Pin
Name
Pin Function
A1 VIN Input supply voltage.
B1
EN
Enable input. A 7MΩ internal resistor is connected from this pin to GND. Drive HIGH to turn on the switch; drive
LOW to turn off the switch. When the EN pin is floated, the switch is OFF.
A2 OUT Output voltage.
B2 GND Ground.
Timing Diagram
Turn-on
Delay
VEN
Turn-off
Delay
90% VOUT
10%
Rising
Time
(Turn on time)=(Turn-on Delay)+(Rising Time)
Falling
Time
5 Page 
Application Information, Cont.
is related to the PCB stray inductance and the placement
of the capacitors. The input capacitor C1 and output
capacitor C2 need to be placed close to the SC33020H. It
is important to keep the voltage ringing below the
maximum voltage rating of the SC33020H.
LPCB
LPCB
VIN
LPCB
VOUT
+
- IIN
C1
1uF
SC33020H
GND
ISW
LPCB
C2
1uF IOUT
RL
LPCB
Figure 2 - PCB Circuit with Equivalent Parasitic
Inductance
Evaluation Board Information
The Top Layer and Bottom Layer of a standard evaluation
board are shown in Fig. 3 and Fig. 4, respectively.
Both T1 and T2 test points are Kelvin connections which
can be used to minimize the
To enable the part, a jumper
measurement error of
can be used between
RVOINN.
and EN on J1. To disable the part, a jumper can be con-
nected between EN and GND on J1. C3 is an optional
solution to improve ringing at input rail during turn-off
and reverse blocking conditions.
SC33020H
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet SC33020H.PDF ] | |
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