max738a Maxim Integrated Products, Inc., max738a Datasheet - Page 3

• Manufacturer Part Number: max738a
• Description: 5v, Step-down, Current-mode Pwm Dc-dc Converters
• Manufacturer: Maxim Integrated Products, Inc.

ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 3, V+ = 9V for the MAX730A, V+ = 12V for the MAX738A/MAX744A, I
unless otherwise noted.)
Note 1: The standby current typically settles to 25µA (over temperature) within 2 seconds; however, to decrease test time, the part
Load Regulation
Efficiency
Supply Current
(includes switch
current)
Standby Current
Shutdown Input
Threshold
Shutdown Input
Leakage Current
Short-Circuit Current
Undervoltage
Lockout
LX On Resistance
LX Leakage Current
Reference Voltage
Reference Drift
Oscillator Frequency
Compensation Pin
Impedance
PARAMETER
is guaranteed at a 100µA maximum value.
_______________________________________________________________________________________
I
I
V+ = 9.0V, I
V+ = 12V, I
V+ = 6.0V
to 9.0V
V+ = 9.0V
to 12.0V
V+ = 12.0V
to 16.0V
SHDN = 0V (Note 1)
V
V
V+ rising
V+ falling
I
V+ = 12V, LX = 0V
V+ = 12V, T
V+ = 6.0V
to 16.0V
LOAD
LOAD
LX
IH
IL
Current-Mode PWM DC-DC Converters
= 500mA
= 0mA to 300mA
= 0mA to 750mA
CONDITIONS
LOAD
LOAD
A
= +25°C
MAX744AC/AE
MAX744AM
MAX744AC/AE
MAX744AM
MAX744AC
MAX744AE
MAX744AM
MAX744AC/AE
MAX744AM
= 750mA
= 300mA
MIN
1.15 1.23
130
2.0
MAX730A
0.0005
7500
TYP
170
1.7
6.0
1.5
4.7
0.5
1.0
92
50
100.0
MAX
0.25
1.30
210
3.0
1.0
5.2
MIN
1.15 1.23
130
2.0
LOAD
MAX738A
0.0005
7500
TYP
160
1.7
6.0
1.5
5.7
0.5
1.0
90
87
50
5V, Step-Down,
= 0mA, T
100.0
MAX
0.25
1.30
190
3.0
1.0
6.0
A
= T
159.0 185.0 212.5
159.0
MIN
1.15 1.23
2.0
5.0
MIN
MAX744A
0.0005
to T
7500
TYP
1.7
1.2
6.0
1.5
5.7
0.5
1.0
90
87
50
MAX
100.0
216.5
,
MAX
0.25
1.30
3.0
2.5
3.0
3.0
3.5
4.0
4.3
4.5
1.0
6.0
5.7
ppm/°C
UNITS
%/mA
kHz
mA
µA
µA
µA
%
Ω
Ω
A
V
V
V
3