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參數資料
| 型號： | 935269488115 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 115 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | 1.50 MM, PLASTIC, MO-178, SOT-25, SOT-23, SOP-5 |
| 文件頁數： | 18/21頁 |
| 文件大?。?/td> | 298K |
| 代理商： | 935269488115 |
Philips Semiconductors
Product data
SA57251-XX
CMOS switching regulator (PWM controlled)
2001 Aug 01
6
VOUT
OUTPUT VOLTAGE
(20 mV/div)
VSW
SW VOLTAGE
(1 V/div)
t (10
s/div)
SL01472
VIN = 1.8 V
Figure 8. Ripple voltage with light load.
VOUT
OUTPUT VOLTAGE
(20 mV/div)
VSW
SW VOLTAGE
(1 V/div)
t (10
s/div)
SL01473
VIN = 1.8 V
Figure 9. Ripple voltage with medium load.
VOUT
OUTPUT VOLTAGE
(20 mV/div)
VSW
SW VOLTAGE
(1 V/div)
t (10
s/div)
SL01474
VIN = 1.8 V
Figure 10. Ripple voltage with heavy load.
VIN
INPUT VOLTAGE
(1 V/div)
VOUT
OUTPUT VOLTAGE
(1 V/div)
t (1 ms/div)
SL01475
IOUT = 60 mA
Figure 11. Start-up characteristic VIN: 0 V → 1.8 V.
VON/OFF
INPUT VOLTAGE
(1 V/div)
VOUT
OUTPUT VOLTAGE
(1 V/div)
t (1 ms/div)
SL01476
IOUT = 60 mA; VIN = 1.8 V
Figure 12. Start-up characteristic VON/OFF: 0 V → 3.0 V.
IOUT
LOAD CURRENT
(20 mA/div)
VOUT
OUTPUT VOLTAGE
(50 mV/div)
t (200
s/div)
SL01477
IOUT: 100 A → 50 mA; VIN = 1.8 V
Figure 13. Output load regulation, increasing current.
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