AT1367A Datasheet, PDF (4/14 Pages) Aimtron Technology – 1MHz, 800mA Synchronous Buck Converter With Power Good Detector & LDO

AT1367A/B/C/D
Preliminary Product Information
1MHz, 800mA Synchronous Buck Converter
With Power Good Detector & LDO
Electrical Characteristics
(VCC = 3.6V,Ta =+25℃ , unless otherwise noted. )
Parameter
Symbol
Condition
Values
Unit
Min. Typ. Max.
DC/DC CONVERTER
VCC UVLO
V_UV VCC=3V→2V Sweep
UVLO Hysteresis width
V_UVHY
Input Supply Range
V_CC
Quiescent Current
I_S Active Mode
Output1 Voltage Accuracy V_OUT1
Output1 Voltage
line-regulation
V_OUT1-Line VCC=3.5V to 6.0V
Output1 Variation
with Temperature
Ta =-20℃ to +85℃
Feedback current
I_OUT1 V_OUT1=3.3V
Current Limit
I_CL1 VIN=5V, V_OUT1=3.3V
Maximum Output Current
I_O VIN=5V, V_OUT1=3.3V, L=4.7uH
Oscillator Frequency
fosc1 Vout1=3.3V
fosc2 Vout1=0V
RDS(ON)
MOSFET
of
P-Channel
R_PFET
I_LX= 600mA
RDS(ON)
MOSFET
of
N-Channel
R_NFET
I_LX= -600mA
SW Leakage Current
I_SWL
- 2.4 -
V
- 100 - mV
2.5 - 6.0 V
- 500 - µA
-2 - +2 %
- 0.1 0.5 %
- 0.5 1.0 %
- 6 - uA
1.10 1.25 1.50 A
-
- 800 mA
0.8 1.0 1.2 MHz
- 200 -- KHz
- 0.3 0.4 Ω
- 0.25 0.35 Ω
- ±0.1 ±1 µA
CONTROL BLOCK
CTL Threshold
CTL leakage Current
V_CTL V_CTL=0V~2V sweep（Metal Option） 0.3 1.0 1.5
V
I_CTL V_CTL=5.0V（Metal Option）
-
6
-
µA
PG on voltage
V_PGON I_PG=1mA
-
- 0.4 V
PG Hysteresis width
V_PGTHYS
- 80 - mV
PG pin leak current
/PG on voltage
/PG Hysteresis width
/PG pin leak current
I_PGTLK V_/PG=5.0V
V_/PGON I_/PG=1mA（Metal Option）
V_/PGTHYS （Metal Option）
I_/PGTLK V_/PG=5.0V（Metal Option）
-
-
1
uA
-
- 0.4 V
- 80 - mV
-
-
1
uA
DELAY Pin Charge Current I_DELAY
0.3 0.5 0.8 uA
LDO
Output2 Voltage Accuracy V_OUT2
-2 - +2 %
Current Limit
I_CL2 V_OUT1=3.3V
450 -
- mA
Dropout Voltage
V_DV I_OUT2=400mA
- 400 600 mV
Load Regulation
∆V_OUT2 I_OUT2=1mA→ 100mA
- 15 50 mV
Line Regulation
LR I_OUT2=100mA, V_OUT1=3.5V→6.0V - 0.05 0.25 %
Ripple Rejection Rate
OUT2 Leakage Current
PSRR I_OUT2=100mA, f=1kHz
- 60 - dB
I_OUT2LK
CTL=0V, V_OUT2=2.5V/1.8V（Metal
Option）
-
6
-
uA
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
3/2/2006 REV:1.2
Email: [e-mail]
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