MAX832 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX832
Maxim Integrated
MAX832 Datasheet PDF : 5 Pages
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5V/3.3V/3V/Adjustable-Output, 1A,
Step-Down, PWM, Switch-Mode DC-DC Regulators
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SENSE Voltage
VC = 2V
CONDITIONS
SENSE Divider Resistance
TA = +25°C
SENSE Voltage Tolerance (Note 8)
VOUT (nominal) = 5V (MAX831),
3.3V (MAX832), or 3V (MAX833)
MAX831
MAX832
MAX833
MAX831
MAX832
MAX833
TA = +25°C
FB Bias Current
Reference Voltage
Reference Voltage Tolerance
(Notes 8, 9)
VFB = VREF (MAX830)
VC = 2V (MAX830) (Note 9)
VREF (nominal = 2.21V) (MAX830)
TA = +25°C
Output Voltage Line Regulation
VC Voltage
VC Voltage Temperature Coefficient
SHUT Current
SHUT Threshold
8V ≤ VIN ≤ 30V
0% duty cycle
0% duty cycle
VSHUT = 5V
VSHUT = 0.1V (shutdown)
(shutdown)
TA = +25°C
MIN
4.85
3.20
2.90
3.0
2.5
2.2
2.155
0.10
TYP
5.00
3.30
3.00
5.0
4.2
3.8
±0.5
±0.5
0.5
2.21
±0.5
±1.0
0.005
1.5
-4
10
0.20
MAX
5.15
3.40
3.10
8.0
7.0
6.5
±2.0
±3.0
2.0
2.265
±1.5
±2.5
0.020
20
50
0.50
UNIT
V
kΩ
%
µA
V
%
%/V
V
mV/°C
µA
V
Note 2: For switch currents between 0.2A and 1A, maximum switch-on voltage can be calculated via linear interpolation.
Note 3: By setting the SENSE pin to 5.5V (or the FB pin to 2.5V), the VC pin is forced to its low clamp level and the switch duty cycle
is forced to zero, approximating the zero load condition.
Note 4: Device shut down. Switch leakage current not included.
Note 5: For proper regulation, total voltage from VIN to GND must be ≥ 8V after start-up. During start-up mode, device is switching
but not regulating.
Note 6: To avoid extremely short switch-on times, the switch frequency is internally scaled down when VFB or VSENSE is less than
1.3V. Switch current limit is tested with VSENSE or VFB adjusted to give a 1µs minimum switch-on time.
Note 7:
RLIM
=
ILIM
1A
× 7.6kΩ +1kΩ
.
Typical value only. Minimum to maximum deviation in current limit will be ±30%,
comparable to that with ILIM pin open.
Note 8: All conditions of input voltage, output voltage, temperature, and load current.
Note 9: FB is at the reference voltage when the MAX830 output voltage is in regulation.
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