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AP2953AS8PR Datasheet(PDF) 2 Page - Wuxi Chipown Micro-electronics limited

No. de pieza AP2953AS8PR
Descripción Electrónicos  3A, 18V Synchronous Rectified Step-Down Converter
PDF  9 Pages
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Fabricante Electrónico  CHIPOWN [Wuxi Chipown Micro-electronics limited]
Página de inicio  https://www.chipown.com.cn/en/index.html
Logo CHIPOWN - Wuxi Chipown Micro-electronics limited

AP2953AS8PR Datasheet(HTML) 2 Page - Wuxi Chipown Micro-electronics limited

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AP2953A
Chipown
8/F, ChuangYuan Building
No.21-1 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718
http://www.chipown.com.cn
V2.0
2 / 9
Absolute Maximum Ratings
(1)
Supply Voltage (VIN)..................................-0.3V to 20V
Switch Voltage (VSW)......................–1V to VIN + 0.3V
Bootstrap Voltage (VBS) ..........Vsw-0.3V to VSW + 6V
Enable/UVLO Voltage (VEN)....................–0.3V to +6V
Comp Voltage (VCOMP) ..........................–0.3V to +6V
Feedback Voltage (VFB) ...........................–0.3V to +6V
Junction Temperature .................................... +150℃
Lead Temperature (Soldering, 10s)................... +260℃
Storage Temperature....................... –55°C to +150℃
Recommended Operating Conditions
(2)
Input Voltage (VIN) ........................................ 4.75V to 18V
Output Voltage (VSW) .................................... 0.925 to 15V
Operating Temperature...................................–20℃to +85℃
Thermal Resistance
(3)
θ
JA
θ
JC
SOP8-PP ...................................... 50...... 10... ℃/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1”square of 1 oz copper.
Electrical Characteristics
VIN = 12V, TA = +25℃, unless otherwise noted.
Parameter
Condition
Min
Typ
Max
Units
Shutdown Supply Current
VEN ≤ 0.3V
0.3
3
µA
Supply Current
VEN = 2.0V, VFB = 1.0V
1.3
1.5
mA
Feedback Voltage
4.75V≤VIN ≤18V
900
925
950
mV
Feedback Overvoltage Threshold
1.1
V
Error Amplifier Voltage
480
V/V
Error Amplifier Transconductance
ΔIC = ±10μA
800
µA/V
High-Side Switch-On Resistance
100
mΩ
Low-Side Switch-On Resistance
100
mΩ
High-Side Switch Leakage
VEN = 0V, VSW = 0V
0
10
µA
Upper Switch Current Limit
4
6
A
Lower Switch Current Limit
0.9
A
COMP to Current Sense Transconductance
5.2
А/V
Oscillator Frequency
310
370
390
KHz
Short Circuit Frequency
VFB = 0V
150
KHz
Maximum Duty Cycle
VFB = 1.0V
90
%
Minimum On Time
220
nS
EN Shutdown Threshold Voltage
VEN Rising
1.1
1.3
1.5
V
EN Shutdown Threshold Voltage Hysterisis
200
mV
EN Lockout Threshold Voltage
2.2
2.5
2.7
V
EN Lockout Hysterisis
210
mV
Input UVLO Threshold Rising
VIN Rising
3.8
4.05
4.4
V
Input UVLO Threshold Hysteresis
210
mV
Soft-start Current
VSS = 0V
6
µA
Soft-start Period
CSS = 0.1μF
15
ms
Thermal Shutdown
160
°C



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