AIC1577 AIC [Analog Intergrations Corporation], AIC1577 Datasheet - Page 4

• Manufacturer Part Number: AIC1577
• Description: External NMOS Step-Down PWM Controller
• Manufacturer: AIC [Analog Intergrations Corporation]

Note 1: Specifications are production tested at TA=25°C. Specifications over the -40°C to 85°C operating
Note 2: Dynamic supply current is higher due to the gate charge being delivered at the switching frequency.
ELECTRICAL CHARACTERISTICS
TYPICAL PERFORMANCE CHARACTERISTICS
DRI Rise Time
DRI Fall Time
BOOST Voltage
Maximum Duty Cycle
Soft Start Time
Run Current Source
Run Pullup Current
100
95
90
85
80
75
70
Fig. 1 Efficiency vs Load Current (V
1
PARAMETER
V
temperature range are assured by design, characterization and correlation with Statistical Quality
Controls (SQC).
OUT
=3.3V
10
Load Current (mA)
100
C
C
V
V
V
IN
ITH/RUN
ITH/RUN
LOAD
LOAD
1000
=8V, I
V
OUT
V
V
IN
IN
IN
= 3000
= 3000
TEST CONDITIONS
=12V
=19V
=3.3V)
=6V
=0V, V
=1V
BOOST
10000
P
P
F
F
=5mA, SW=0V
FB
=0V
(Continued)
100
95
90
85
80
75
70
Fig. 2 Efficiency vs Load Current (V
1
V
OUT
=5V
10
Load Current (mA)
MIN.
100
4.9
1.0
90
5
100
TYP.
190
5.3
7.5
2.3
94
50
50
1000
V
IN
OUT
MAX.
V
AIC1577
V
=12V
IN
250
5.7
4.0
IN
75
75
=5.0V)
=19V
=6V
10000
UNIT
mS
nS
nS
µA
µA
%
V
4