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AP3433FNTR-G1

P1-P3P4-P6P7-P9P10-P12P13-P13
Preliminary Datasheet
3A, 2MHz High Performance Synchronous Buck Converter AP3433
Jul. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
7
Typical Performance Characteristics
Figure 4. Supply Current vs. Input Voltage Figure 5. Supply Current vs. Temperature
Figure 6. Efficiency vs. Output Current Figure 7.UVLO Threshold vs. Temperature
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7
360
365
370
375
380
385
390
395
400
405
410
415
420
425
430
Supply Current (µA)
Input Voltage (V)
-50 -25 0 25 50 75 100 125 150
370
380
390
400
410
420
430
440
450
460
470
V
IN
=5V
V
FB
=0.9V
Supply Current (µA)
Temperature (
o
C)
0 300 600 900 1200 1500 1800 2100 2400 2700 3000
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Efficiency (%)
Output Current (mA)
V
OUT
=1.8V
V
IN
=3.3V
V
IN
=5V
-50 -25 0 25 50 75 100 125 150
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
UVLO Threshold (V)
Temperature (
o
C)
Start Switching
Stop Switching
Preliminary Datasheet
3A, 2MHz High Performance Synchronous Buck Converter AP3433
Jul. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
8
Typical Performance Characteristics (Continued)
Figure 8. Switching Frequency vs. Temperature Figure 9. Reference Voltage vs. Temperature
Figure 10. Switching Frequency vs. RT Resistance Figure 11. Switching Frequency vs. RT Resistance
Low Frequency Range High Frequency Range
-50 -25 0 25 50 75 100 125 150
900
910
920
930
940
950
960
970
980
990
1000
1010
1020
R
T
=180k
Switching Frequency (kHz)
Temperature (
o
C)
-50 -25 0 25 50 75 100 125 150
0.816
0.818
0.820
0.822
0.824
0.826
0.828
0.830
0.832
0.834
Reference Voltage (V)
Temperature (°C)
300 400 500 600 700 800 900 1000
100
200
300
400
500
600
700
800
Switching Frequency (kHz)
RT Resistance (kΩ)
80 100 120 140 160 180 200
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
Switching Frequency (kHz)
RT Resistance (kΩ)
Preliminary Datasheet
3A, 2MHz High Performance Synchronous Buck Converter AP3433
Jul. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
9
Typical Performance Characteristics (Continued)
Time 4ms/div Time 20µs/div
Time 200µs/div Time 400ns/div
V
OUT(AC)
200mV/div
Figure 14. Load Transient Response Figure 15. Synchronizing to External Clock
(V
IN
=5V, V
OUT
=1.8V, I
OUT
=0 to 3A) (f
CLOCK
=2MHz)
I
OUT
2A/div
V
CLOCK
2V/div
V
SW
2V/div
V
OUT
1V/div
V
IN
2V/div
I
L
2A/div
V
SS
2V/div
Figure 12. Start up from V
IN
(V
IN
=5V, V
OUT
=1.8V, I
OUT
=3A) Figure 13. Disable IC (V
IN
=5V, V
OUT
=1.8V, I
OUT
=3A)
V
EN
2V/div
V
OUT
1V/div
V
SS
2V/div
I
L
2A/div
P1-P3P4-P6P7-P9P10-P12P13-P13

AP3433FNTR-G1

Mfr. #:
Buy AP3433FNTR-G1
Manufacturer:
Description:
Voltage Regulators - Switching Regulators 3A 2MHz Sync Buck DC/DC 2.95V to 5.5V
Lifecycle:
New from this manufacturer.
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