ame5251 AME, Inc., ame5251 Datasheet - Page 7

• Manufacturer Part Number: ame5251
• Description: Dual 1a, 1.5mhz Synchronous Step-down Converter
• Manufacturer: AME, Inc.

n Electrical Specifications ( For Customer )
Rev.A.02
AME5251
Note 1. Spec. for per channel
V
Input voltage
Adjustable Output Range
Feedback Voltage
Feedback Pin Bias Current
Quiescent Current
(For Adjustable Output Voltage)
Shutdown Current
Switch Frequency
High-side Switch On-Resistance
Low-side Switch On-Resistance
Switch Current Limit
EN High (Enabled the Device)
EN Low (Shutdown the Device)
Input Undervoltage Lockout
Input Undervoltage Lockout
Hysteresis
Thermal Shutdown Temperature
Maximum Duty Cycle
SW Leakage Current
IN
=3.6V, V
Parameter
OUT
AME
=2.5V, V
FB
=0.6V, L=2.2 H, C
V
R
R
Symbol
UVLO,HYST
DS,ON, LHI
DS,ON, LO
V
V
V
I
I
SW,CL
OTP
D
SHDN
f
V
V
V
OSC
EN,LO
I
EN,HI
UVLO
FB
I
MAX
out
FB
Q
IN
IN
=4.7 F, C
Shutdown, temperature increasing
For Adjustable OutputVoltage
I
I
OUT
SW
SW
I
OUT
EN=0V, V
V
=10 F, T
Test Condition
=200mA, V
=200mA, V
V
V
V
SW
IN
IN
IN
=0mA, V
Dual 1A, 1.5MHz Synchronous
rising edge
V
=2.5 to 5.5V
=2.5 to 5.5V
=2.5 to 5.5V
V
=0V or 5.0V
EN
FB
=GND
=V
A
IN
=25
IN
=5.0V
FB
IN
IN
=3.6V
=3.6V
=1V
o
C, I
Step-Down Converter
MAX
=1A unless otherwise specified.
0.588
Min
V
100
2.5
-50
1.2
1.4
1.5
-1
FB
0.28
0.25
Typ
160
0.6
0.1
1.5
1.8
0.1
20
1.6
V
0.612
Max
5.5
IN
1.8
50
40
0.4
1
1
-0.2
Units
MHz
n
o
%
V
V
V
A
V
V
V
V
C
A
A
A
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