ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage V
IN
....................... –0.3V to +26V
Switch Voltage V
SW
................. –1V to V
IN
+ 0.3V
Boost Voltage V
BS
..........V
SW
– 0.3V to V
SW
+ 6V
All Other Pins................................. –0.3V to +6V
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature .............–65°C to +150°C
AMS1070
Recommended Operating Conditions
(2)
Input Voltage V
IN
............................ 4.75V to 23V
Output Voltage V
OUT
.................... 0.925V to 20V
Ambient Operating Temp .............. –40°C to +85°C
Notes:
1)
2)
Exceeding these ratings may damage the device.
The device is not guaranteed to function outside of its operating conditions.
1
ELECTRICAL CHARACTERISTICS
V
IN
= 12V, T
A
= +25°C, unless otherwise noted.
Parameter
Shutdown Supply Current
Supply Current
Feedback Voltage
Feedback Overvoltage Threshold
Error Amplifier Voltage Gain
(3)
Symbol
Condition
V
EN
= 0V
V
EN
= 2.0V, V
FB
= 1.0V
Min
Typ
1.0
1.3
Max
3.0
1.5
0.950
Units
µA
mA
V
V
V/V
µA/V
mΩ
mΩ
V
FB
A
EA
G
EA
R
DS(ON)1
R
DS(ON)2
4.75V
≤
V
IN
≤
23V
0.900
0.925
1.1
400
Error Amplifier Transconductance
High-Side Switch On-Resistance
(3)
∆I
C
=
±10µA
820
100
100
Low-Side Switch On-Resistance
(3)
High-Side Switch Leakage Current
Upper Switch Current Limit
Lower Switch Current Limit
COMP to Current Sense
Transconductance
Oscillation Frequency
Short Circuit Oscillation Frequency
Maximum Duty Cycle
Minimum On Time
(3)
V
EN
= 0V, V
SW
= 0V
Minimum Duty Cycle
From Drain to Source
G
CS
F
osc1
F
osc2
D
MAX
T
ON
V
EN
Rising
1.1
V
FB
= 0V
V
FB
= 1.0V
4.0
0
5.8
0.9
5.2
380
110
90
210
1.5
220
10
µA
A
A
A/V
KHz
KHz
%
ns
EN Shutdown Threshold Voltage
EN Shutdown Threshold Voltage
Hysterisis
2.0
V
mV
2
Advanced Monolithic Systems http://www.ams-semitech.com
AMS [ Advanced Monolithic Systems Ltd ]
