SA57254-30GW Datasheet, PDF (7/18 Pages) NXP Semiconductors – CMOS switching regulator (PWM controlled)

Philips Semiconductors
CMOS switching regulator (PWM controlled)
Product data
SA57254-XX
I_OUT
LOAD CURRENT
(20 mA/div)
I_OUT: 50 mA → 100 µA; V_IN = 1.8 V
V_OUT
OUTPUT VOLTAGE
(50 mV/div)
t (5 ms/div)
SL01478
Figure 14. Output load regulation, decreasing current.
V_IN: 2.4 V → 1.8 V; I_OUT = 50 mA
V_IN
INPUT VOLTAGE
(500 mV/div)
V_OUT
OUTPUT VOLTAGE
(50 mV/div)
t (200 µs/div)
SL01480
Figure 16. Input line regulation, decreasing voltage.
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
V_ST1
0.1
V_DO
0.0
01
2
34
56
7
8
9 10
I_OUT, OUTPUT CURRENT (mA)
SL01482
Figure 18. Input voltage versus output current.
V_IN
INPUT VOLTAGE
(500 mV/div)
V_OUT
OUTPUT VOLTAGE
(50 mV/div)
V_IN: 1.8 V → 2.4 V; I_OUT = 50 mA
t (100 µs/div)
SL01479
Figure 15. Input line regulation, increasing voltage.
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
V_ST1
0.1
V_DO
0.0
0 1 2 3 4 5 6 7 8 9 10
I_OUT, OUTPUT CURRENT (mA)
SL01481
Figure 17. Output current versus starting voltage.
500
450
V_OUT = 2 V
400
V_OUT = 3 V
350
V_OUT = 5 V
300
250
200
150
100
50
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
V_IN, INPUT VOLTAGE (V)
SL01483
Figure 19. Input voltage versus supply current.
2003 Nov 11
7