AT1366B Datasheet, PDF (4/14 Pages) Aimtron Technology – 1MHz,800mA Synchronous Buck Converter

AT1366B
Preliminary Product Information
1MHz,800mA Synchronous Buck Converter
Electrical Characteristics
Parameter
Symbol
(VIN = 3.6V,Ta =+25Ċ , unless otherwise noted. )
Condition
Values
Unit
Min. Typ. Max.
Input Supply Range
V_IN
Quiescent Current^*
I_S
FB=0.6V, Iload=0A
Active Mode
RUN=0V, VIN=5.5V
Current in standby mode I_ST
2.5 -- 5.5 V
-- 300 -- µA
-- 0.5 1 µA
Feedback Voltage
Ta =-20Ċ to +85Ċ
V_FB
0.588 0.600 0.612 V
Feedback Voltage
line-regulation
Feedback Variation
with Temperature
VCC=2.5V to 5.5V
V_FB-Line
Ta =-20Ċ to +85Ċ
-- 0.1 0.5 %
-- 0.5 1.0 %
Feedback current
I_FB
--
-- ±200 nA
Peak Inductor Current*
I_PK ^{VIN=5V,VOUT=3.3V}
1.10 1.25 1.50 A
Maximum Output
Current*
I_O
VIN=5V±5%, VOUT=3.3V,
L=4.7µH
-
- 800 mA
Oscillator Frequency
fosc1 ^FB=0.6V
fosc2 ^FB=0V
0.8 1.0 1.2 _MHz
-- 200 -- _KHz
RDS(ON) _{of P-Channel}
MOSFET
R_PFET
ISW=600mA
--
RDS(ON) _{of N-Channel}
MOSFET
R_NFET
ISW=-600mA
--
SW Leakage Current
I_LSW ^{RUN=0V,SW=0V or 5V,VIN=5V} --
0.4 0.5 Ω
0.35 0.45 Ω
±0.1 ±1 µA
RUN Threshold
V_RUN
0.3 1.0 1.5 V
RUN leakage Current
I_RUN
-- ±0.1 ±1 µA
* I _PK
= I_O
+
∆I
2
=
I_O
+ ^(VIN
−V_OUT ) × t_ON
2× L
7F, No.9, PARK AVENUE II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] Fax: [phone]
WWW: http://www.aimtron.com.tw
1/18/2006 REV:1.2
Email:[e-mail]
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