SA57254-30GW Datasheet, PDF (6/18 Pages) NXP Semiconductors – CMOS switching regulator (PWM controlled)

Philips Semiconductors
CMOS switching regulator (PWM controlled)
Product data
SA57254-XX
V_OUT
OUTPUT VOLTAGE
(20 mV/div)
V_SW
SW VOLTAGE
(1 V/div)
V_IN = 1.8 V
V_OUT
OUTPUT VOLTAGE
(20 mV/div)
V_SW
SW VOLTAGE
(1 V/div)
V_IN = 1.8 V
t (10 µs/div)
Figure 9. Ripple voltage at I_OUT = 200 µA.
SL01472
V_IN = 1.8 V
V_OUT
OUTPUT VOLTAGE
(20 mV/div)
V_SW
SW VOLTAGE
(1 V/div)
t (10 µs/div)
SL01473
Figure 10. Ripple voltage at I_OUT = 10 mA.
I_OUT = 60 mA
V_IN
INPUT VOLTAGE
(1 V/div)
V_OUT
OUTPUT VOLTAGE
(1 V/div)
t (10 µs/div)
SL01474
Figure 11. Ripple voltage at I_OUT = 60 mA.
I_OUT
LOAD CURRENT
(20 mA/div)
I_OUT: 100 µA → 50 mA; V_IN = 1.8 V
V_OUT
OUTPUT VOLTAGE
(50 mV/div)
t (1 ms/div)
SL01475
Figure 12. Start-up characteristic V_IN: 0 V → 1.8 V.
t (200 µs/div)
SL01477
Figure 13. Output load regulation, increasing current.
2003 Nov 11
6