AT1362 Datasheet, PDF (4/13 Pages) Aimtron Technology – Synchronous Buck Converter With Power Good Detector & LDO

AT1362A/B
Preliminary Product Information
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
- 2.4 -
V
UVLO Hysteresis width
V_UVHY
Input Supply Range
V_CC
Quiescent Current
I_S Active Mode
Output1 Voltage Accuracy
Output1 Voltage
line-regulation
Output1 Variation
with Temperature
V_OUT1
V_OUT1-Line VCC=3.5V to 6.0V
Ta =-20℃ to +85℃
Feedback current
I_OUT1
Current Limit
Maximum Output Current
I_CL1 VIN=5V, V_OUT1=2.5V/1.8V
I_O
VIN=5V, V_OUT1=2.5V/1.8V,
L=4.7uH
Oscillator Frequency
fosc1 Vout1=2.5V/1.8V
fosc2 Vout1=0V
RDS(ON) _{of P-Channel}
MOSFET
RDS(ON) _{of N-Channel}
MOSFET
R_PFET
R_NFET
I_LX= 300mA
I_LX= -300mA
SW Leakage Current
I_SWL
- 100 - mV
2.5 - 6.0 V
- 500 - µA
-2 - +2 %
- 0.1 0.5 %
- 0.5 1.0 %
- 6 - uA
0.6 0.7 0.8 A
400 -
- 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
PG on voltage
V_PGON I_PG=1mA
PG Hysteresis width
V_PGTHYS
PG pin leak current
I_PGTLK V_PG=5.0V
LDO control on Hysteresis
width
V_LDTHYS
DELAY Pin Charge Current I_DELAY
-
- 0.4 V
- 80 - mV
-
-
1 uA
- 80 - mV
0.8 1.0 1.2 uA
LDO
Output2 Voltage Accuracy
Current Limit
Dropout Voltage
Load Regulation
Line Regulation
Ripple Rejection Rate
OUT2 Leakage Current
V_OUT2
-2 - +2 %
I_CL2
450 -
- mA
V_DV I_OUT2=400mA
- 400 600 mV
∆V_OUT2 I_OUT2=1mA→ 100mA
- 15 50 mV
LR I_OUT2=100mA, V_OUT1=3.6V→6.0V - 0.05 0.25 %
PSRR I_OUT2=100mA, f=1kHz
- 60 - dB
I_OUT2LK
- 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
5/30/2006 REV:1.0
Email: [e-mail]
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