參數(shù)資料
型號(hào)： MAX833
廠商： Maxim Integrated Products, Inc.
英文描述： 5V/3.3V/3V/Adjustable-Output, 1A, Step-Down, PWM, Switch-Mode DC-DC Regulators
中文描述： 5V/3.3V/3V/可調(diào)輸出、1A、降壓型、PWM、開關(guān)模式DC-DC穩(wěn)壓器
文件頁(yè)數(shù)： 3/5頁(yè)
文件大?。?/td> 43K
代理商： MAX833
5V/3.3V/3V/Adjustable-Output, 1A,
Step-Down, PWM, Switch-Mode DC-DC Regulators
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 25V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
_______________________________________________________________________________________
3
M
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 V
C
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 V
IN
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 V
FB
or V
SENSE
is less than
1.3V. Switch current limit is tested with V
SENSE
or V
FB
adjusted to give a 1μs minimum switch-on time.
comparable to that with I
LIM
pin open.
Note 7:
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.
R
I
LIM
1A
7.6k
1k
LIM
=
×
+
.
PARAMETER
CONDITIONS
V
C
Voltage Temperature Coefficient
MAX831
MAX832
MAX833
MAX831
MAX832
MAX833
MIN
4.85
3.20
2.90
3.0
2.5
2.2
TYP
5.00
3.30
3.00
5.0
4.2
3.8
MAX
5.15
3.40
3.10
8.0
7.0
6.5
UNIT
0% duty cycle
0% duty cycle
T
A
= +25°C
mV/°C
FB Bias Current
0.5
2.0
V
Reference Voltage
V
REF
(nominal = 2.21V) (MAX830)
T
A
= +25°C
1.5
-4
V
C
Voltage
V
V
μ
A
V
SHUT
= 5V
V
SHUT
= 0.1V (shutdown)
(shutdown)
SENSE Voltage
10
20
V
C
= 2V
8V
≤
V
IN
≤
30V
SHUT Current
0.005
0.020
%/V
Output Voltage Line Regulation
50
k
μA
SENSE Divider Resistance
T
A
= +25°C
0.10
0.20
0.50
%
SENSE Voltage Tolerance (Note 8)
V
OUT
(nominal) = 5V (MAX831),
3.3V (MAX832), or 3V (MAX833)
±0.5
±2.0
2.155
2.21
2.265
SHUT Threshold
V
%
Reference Voltage Tolerance
(Notes 8, 9)
±0.5
±1.5
T
A
= +25°C
V
FB
= V
REF
(MAX830)
V
C
= 2V (MAX830) (Note 9)
±1.0
±2.5
Typical value only. Minimum to maximum deviation in current limit will be ±30%,
±0.5
±3.0
相關(guān)PDF資料
PDF描述
MAX833CWE 5V/3.3V/3V/Adjustable-Output, 1A, Step-Down, PWM, Switch-Mode DC-DC Regulators
MAX830CWE 5V/3.3V/3V/Adjustable-Output, 1A, Step-Down, PWM, Switch-Mode DC-DC Regulators
MAX831 Evaluation Kit for the MAX830/MAX831/MAX832/MAX833
MAX832 Evaluation Kit for the MAX830/MAX831/MAX832/MAX833
MAX833EVKIT Evaluation Kit for the MAX830/MAX831/MAX832/MAX833
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