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SC220QSTRT 数据表(PDF) 3 Page - Semtech Corporation

部件名 SC220QSTRT
功能描述  20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator
PDF  14 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC220QSTRT 数据表(HTML) 3 Page - Semtech Corporation

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3
SC220 x
SC220Q
Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters
specified in the Electrical Characteristics section is not recommended.
Notes:
() All voltage values in this section are with respect to PGND pin voltage.
(2) Tested according to JEDEC standard JESD22-A4-B.
(3) 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.
Absolute Maximum Ratings
AVIN, PVIN (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.0
VOUT, FB, EN, SW (V) . . . . . . . . . . . . . . . . . . . . .-0.3to(V
IN +0.3)
AGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3 to +0.3
ESD Protection Level() (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . 3kV
Recommended Operating Conditions
Input Voltage Range (V) . . . . . . . . . . . . . . . . . . . . . +2.7 to +5.5
Output DC Current (mA). . . . . . . . . . . . . . . . . . . . . up to 650
Operating Temperature Range (°C) . . . . . . . . . . -40 to +85
Thermal Information
Thermal Resistance, Junction to Ambient(2) (°C/W)....38
Junction Temperature Range (°C) . . . . . . . . . . -40 to +50
Storage Temperature Range (°C) . . . . . . . . . . . . -65 to +50
Lead Temperature (soldering 0s (°C) . . . . . . . . . . . . . . . . 260
Unless otherwise specified: AVIN=PVIN = 3.6V, EN = AVIN = PVIN, C
IN=COUT =.0μF, L=220nH. TA = 25°C for typical values, -40°C < TA = TJ < 85°C for
minimum and maximum values.
Parameter
Symbol
Condition
Min
Typ
Max
Units
POWER SUPPLY
Input Voltage
V
IN
2.7
5.5
V
Input Quiescent Current
I
VIN_Q
No load, no switching
9
40
µA
Shutdown Current
I
VIN_SD
EN = 0V
.0
µA
POWER SWITCH
PMOS On Resistance
400
mΩ
NMOS On Resistance
360
mΩ
OSCILLATOR
Switching Frequency
f
OSC
PWM Mode
6
20
24
MHz
REGULATION
Output Voltage Tolerance()
V
OUT_TOL
-4.0
4.0
%
Current Limit
I
LIMIT
850
300
mA
Soft-Start()
t
SS
EN pin low to high
40
µs
Feedback Voltage
V
FB
2.7V ≤ VIN ≤ 5.5V
0.97
.00
.03
V
Electrical Characteristics



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