AATIAN22 Datasheet, PDF (2/11 Pages) SiGe Semiconductor, Inc. – 3MHz Fast Transient 400mA Step-Down Converter

EV-139
AAT1149 EVAL: 3MHz Fast Transient
400mA Step-Down Converter
V_OUT (V)
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.8
1.85
2.0
2.5
3.3
3.6
R2 = 59kΩ
R1 (kΩ)
19.6
29.4
39.2
49.9
59.0
68.1
78.7
88.7
118
124
137
187
267
295
Table 2: AAT1149 Adjustable Resistor Values.
R2 = 221kΩ
R1 (kΩ)
75
113
150
187
221
261
301
332
442
464
523
715
1000
1105
Test Equipment
1. Unit under test (UUT) is the AAT1149 Evaluation Board.
2. One (1) Keithley 2430 3A source meter or equivalent.
3. Two (2) XT30-2 power supplies or equivalent.
4. Two (2) 10Ω, 100W variable resistors, or DC electronic loads.
5. Two (2) Fluke 189 multi-meters or equivalent.
6. A HP33120A 15MHz Function/ Arbitrary waveform generator. Set to PWM setting.
7. Oscilloscope Tektronix TDS3054B or equivalent, three (3) Tek P6139A oscilloscope voltage probes or
equivalent, and one Tektronix TCP202 300V 15A peak current probe.
8. A Network Analyzer.
9. Miscellaneous test leads (banana plug to clip lead type is recommended).
2
EV-139.2007.08.1.0