Datasheet

ADP1872/ADP1873 Data Sheet
Rev. B | Page 10 of 40
335
325
315
305
295
285
275
265
255
245
235
225
10.8 11.0 11.2 11.4 11.6 11.8 12.0 12.2 12.4 12.6 12.8 13.0 13.2
FREQUENCY (kHz)
V
IN
(V)
+125°C
+25°C
–40°C
NO LOADV
DD
= 5.5V
V
DD
= 3.6V
08297-022
Figure 22. Switching Frequency vs. High Input Voltage,
300 kHz, ±10% of 12 V
650
600
550
500
450
400
10.8 11.0 11.2 11.4 11.6 11.8 12.0 12.2 12.4 12.6 12.8 13.0 13.2
FREQUENCY (kHz)
V
IN
(V)
08297-023
NO LOAD
+125°C
+25°C
–40°C
V
DD
= 5.5V
V
DD
= 3.6V
Figure 23. Switching Frequency vs. High Input Voltage,
600 kHz, V
OUT
= 1.8 V, ±10% of 12 V
1000
550
600
650
700
750
800
850
900
950
10.8 11.0 11.2 11.4 11.6 11.8 12.0 12.2 12.4 12.6 12.8 13.0 13.2
FREQUENCY (kHz)
V
IN
(V)
+125°C
+25°C
–40°C
V
DD
= 5.5V
V
DD
= 3.6V
08297-024
NO LOAD
Figure 24. Switching Frequency vs. High Input Voltage,
1.0 MHz, ±10% of 12 V
340
325
310
295
280
265
250
235
220
205
190
0 16,00014,00012,00010,0008000600040002000
FREQUENCY (kHz)
LOAD CURRENT (mA)
V
IN
= 5.5V
V
IN
= 13V
V
IN
= 16.5V
+125°C
+25°C
–40°C
08297-025
Figure 25. Frequency vs. Load Current, 300 kHz, V
OUT
= 0.8 V
360
350
340
330
320
310
300
290
280
270
260
0 20,00016,000 18,00014,00012,00010,0008000600040002000
FREQUENCY (kHz)
LOAD CURRENT (mA)
V
IN
= 5.5V
V
IN
= 13V
V
IN
= 16.5V
+125°C
+25°C
–40°C
08297-026
Figure 26. Frequency vs. Load Current, 300 kHz, V
OUT
= 1.8 V
358
290
294
298
302
306
310
314
318
322
326
330
334
338
342
346
350
354
0 96006400 7200 8000 8800560048004000320024001600800
FREQUENCY (kHz)
LOAD CURRENT (mA)
V
IN
= 13V
V
IN
= 16.5V
+125°C
+25°C
–40°C
08297-027
Figure 27. Frequency vs. Load Current, 300 kHz, V
OUT
= 7 V