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STW4510 データシート(PDF) 37 Page - STMicroelectronics

部品番号 STW4510
部品情報  2 step-down DC/DC converters / 5 LDO power management
PDF  57 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STW4510 データシート(HTML) 37 Page - STMicroelectronics

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STw4510
Electrical and timing characteristics
37/57
4.2.3
Vsdc1 DC/DC step-down converter
Table 18.
Vsdc1 DC/DC step-down converter
Symbol
Description
Test conditions
Min.
Typ.
Max.
Units
Vsdc1 regulator in high power mode
VBAT
Input power supply
2.7
3.6
5.5
V
VOUT
Programmable output
voltage
Vsdc1_sel[1:0] = 00
* vsdc1_prg[3:0]
1111
1110
1101
1100
1011
1010
1001
1000
0111
0110
0101
0100 (default)
0011
0010
0001
0000
-5%
-5%
-5%
1.50
1.40
1.38
1.36
1.34
1.32
1.30
1.28
1.26
1.24
1.22
1.20
1.15
1.10
1.05
1.00
+5%
+5%
+ 5%
V
VRIPPLE
Output voltage ripple
Vsdc1 = 1.2 V
IOUT = 200 mA
10
mVpp
IOUT
Output current
600
mA
PEFF
Power efficiency
Vsdc1 = 1.2 V
IOUT = 200 mA
86
%
ISHORT
(1)
Short circuit current
limitation
0.9
1.2
1.4
A
I(2)Q
Quiescent current
IOUT = 0 mA
5
µA
ILKG
Power-down current
en_vsdc1 = 0
1.5
µA
PSRR(1)
Power supply rejection
Vsdc1 = 1.2 V
IOUT = 200 mA
Vpp = 0.3 V,
F: [0; 20] kHz
40
dB
SR
Rising slope
IOUT = 10 mA
0.55
ms/V
Lir
Line regulation
VBAT: [2.7; 5.5] V
10
mV
Ldr
Load regulation
IOUT: [0.1; 600] mA
10
mV



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