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ST763A 数据表(PDF) 7 Page - STMicroelectronics

部件名 ST763A
功能描述  3.3V Step down current mode PWM DC-DC converters
PDF  14 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST763A 数据表(HTML) 7 Page - STMicroelectronics

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ST763A series
Electrical characteristics
7/14
5
Electrical characteristics
Table 4.
Electrical characteristics
(VCC = 5V, IO = 0mA, TA = TMIN to TMAX, unless otherwise specified).
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VCC
Input voltage
3.3
11
V
VO
Output voltage
VCC = 4 to 11V, IO = 0 to 300mA
3.135
3.3
3.465
V
VCC = 4.75 to 11V, IO = 0 to 500mA
3.135
3.3
3.465
V
ΔVO
Line regulation
0.13
%/V
ΔVO
Load regulation
IO = 0 to 500mA
0.005
%/mA
η
Power efficiency
IO = 300mA
88
%
IO = 100mA
90
ISUPPLY Supply current
ON Mode (Including switch current)
0.6
2.5
mA
OFF Mode
0.2
100
μA
VIH
SHDN Input high threshold
2
V
VIL
SHDN Input low threshold
0.25
V
ISHDN
Shutdown input leakage current
1
μA
VLOCK
Under voltage lockout
VCC Falling
2.7
3
V
RDS(on) LX On resistance
ILX = 500mA
1
Ω
ILEAK
LX Leakage current
VCC = 12V, VLX = 0V
10
nA
VREF
Reference voltage
TA = 25°C
1.18
1.25
1.32
V
ΔVREF Temperature reference drift
TA = TMIN to TMAX
50
ppm/°C
fOSC
Switching frequency
TA = 25°C
159
200
212.5
KHz
RC
Compensation pin impedance
7500
Ω



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