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SC284PEVB датащи(PDF) 3 Page - Semtech Corporation

номер детали SC284PEVB
подробное описание детали  Dual Channel 2.5MHz, 2.0A Synchronous Buck with Automatic Power Save
PDF  22 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC284PEVB датащи(HTML) 3 Page - Semtech Corporation

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SC284P
Electrical Characteristics
Exceeding the absolute maximum ratings may result in permanent damage to the device and/or device malfunction. Operation outside of the
parameters specified in the Electrical Characteristics section is not recommended.
Notes:
() Calculated from package in still air, mounted to 3 x 4.5 (in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD5 standards.
(2) Tested according to JEDEC standard JESD22-A4-B.
Unless specified:
V
INA= VINB= 5.0V, VOUTA= VOUTB= .5V, CINA= CINB=0µF, COUTA=COUTB= 22µF, L= 2.2µH, -40°C ≤ (TA = TJ )≤ +25 °C. Unless otherwise
noted typical values are T
A= +25 °C.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Input Voltage Range
V
INA/B
2.75
5.5
V
Under-Voltage Lockout
UVLO
Rising
V
INA ,VINB
2.55
2.65
2.75
V
Hysteresis
200
mV
Quiescent Current
I
Q
Channel A & B, PWM mode excluding I
OUT,
per channel
6
mA
I
OUT = 0mA, CTLX = VIN
60
µA
Shutdown Current
I
SHDN
CTL
0-2= GND, Per channel

0
µA
Soft-Start Time
t
SS
Channel A & B; I
OUT= 2A, VOUT =90% of final value
700
µs
Output Voltage Range
V
OUT
.0
3.3
V
Output Voltage Tolerance()
ΔV
OUT
Channel A & B; I
OUT=400mA, PWM Mode
-2.0
+2.0
%
PSAVE Mode
.75
CTL Settings Regulation
ΔV
CTL-REG
Channel A & B; Relative to V
OUT at CTL=00,
I
OUTA=400mA; IOUTB=400mA; PWM Mode
±
%
Line Regulation
ΔV
LINE-REG
Channel A & B; V
IN= 2.75 – 5.5V; PWM Mode
±0.2
%/V
Load Regulation
ΔV
LOAD-REG
Channel A & B; V
IN = 5.0V; IOUT=mA – 2A
±0.3
%/A
Absolute Maximum Ratings
AVINA, AVINB, PVINA, PVINB Supply (V) . . . . . -0.3 to +6.0
LXA and LXB (V) . . . . . . . . . - to V
IN +, -3 (20ns Max), 6 Max
VOUTA and VOUTB (V) . . . . . . . . . . . . . . . . . . -0.3 to (V
IN +0.3)
CTLXA/B pins (V) . . . . . . . . . . . . . . . . . . . -0.3 to (V
IN + 0.3)
Peak IR Reflow Temperature (°C) . . . . . . . . . . . . . . . . . . . . . 260
ESD Protection Level(2) (kV) . . . . . . . . . . . . . . . . . . . . . . . . . 3kV
Output Short Circuit to GND. . . . . . . . . . . . . . . .Continuous
Recommended Operating Conditions
V
INA and VINB Supply (V) . . . . . . . . . . . . . . . . . . . . . . . 2.75 to 5.5
Maximum Output Current Each Channel (A) . . . . . . . . . 2.0
Thermal Information
Thermal Resistance, Junction to Ambient () (°C/W) . . . . 40
Maximum Junction Temperature (°C) . . . . . . . . . . . . . . +50
Storage Temperature Range (°C) . . . . . . . . . . . . . . -65to+50



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