參數(shù)資料
型號： MAX1540A
廠商： Maxim Integrated Products, Inc.
英文描述： Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator
中文描述： 雙路、降壓型控制器，帶有電感飽和保護、動態(tài)輸出和線性穩(wěn)壓器
文件頁數(shù)： 5/49頁
文件大?。?/td> 794K
代理商： MAX1540A
M
Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V
CC
= V
DD
= ON1 = ON2 = 5V,
SKIP
= GND, LDOIN (MAX1541) = V+,
T
A
= 0°C to +85°C
, unless otherwise noted. Typical
values are at T
A
= +25
°
C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
REFERENCE (REF)
T
A
= + 25° C to + 85
°
C
T
A
= 0° C to +85°C
1.986
1.983
-0.01
2.00
2.00
2.014
2.017
+0.01
Reference Voltage
V
REF
V
CC
= 4.5V to 5.5V,
I
REF
= 0V
I
REF
= -10μA to +50μA
Rising edge, hysteresis = 350mV
V
Reference Load Regulation
REF Lockout Voltage
Δ
V
REF
V
REF(UVLO)
V
V
1.95
REFIN1 (MAX1541)
Voltage Range
V
REFIN
0.7
V
REF
V
REFIN1 (MAX1541)
Input Bias Current
I
REFIN1
0.01
0.05
μA
FAULT DETECTION
Overvoltage Trip Threshold
With respect to error-comparator threshold,
OVP/UVP = V
CC
12
16
20
%
Overvoltage Fault-Propagation
Delay
t
OVP
FB forced 2% above trip threshold
10
μs
Output Undervoltage-Protection
Trip Threshold
With respect to error-comparator threshold,
OVP/UVP = V
CC
65
70
75
%
Output Undervoltage-Protection
Blanking Time
t
BLANK
From rising edge of ON_
10
35
ms
Output Undervoltage Fault-
Propagation Delay
t
UVP
10
μs
PGOOD_ Lower Trip Threshold
With respect to error-comparator threshold,
hysteresis = 1%
-13
-10
-7
%
PGOOD_ Upper Trip Threshold
With respect to error-comparator threshold,
hysteresis = 1%
FB forced 2% beyond P GOOD _ trip threshold
+7
+10
+13
%
PGOOD_ Propagation Delay
PGOOD_ Output Low Voltage
t
PGOOD
_
10
μs
V
I
SINK
= 4mA
FB = REF (PGOOD high impedance),
PGOOD forced to 5.5V
0.3
PGOOD_ Leakage Current
I
PGOOD
_
1
μA
FBLANK = V
CC
FBLANK = open
FBLANK = REF
120
80
35
220
140
65
+150
+160
320
205
95
Fault-Blanking Time
(MAX1541 Only)
t
FBLANK
μs
LDOON = V
CC
LDOON = GND
Thermal-Shutdown Threshold
T
SHDN
Hysteresis = 10°C
°C
V
CC
Undervoltage-Lockout
Threshold
V
UVLO(VCC)
Rising edge, PWM disabled below this
level, hysteresis = 20mV
4.1
4.25
4.4
V
CURRENT LIMIT
ILIM_ Adjustment Range
0.25
0
-0.3
2
V
CSP_
CSN_
2.7
+28
0.5
Current-Limit Input Range
V
CSP_/CSN_ Input Current
μA
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MAX1540AETJ+ 功能描述:DC/DC 開關(guān)控制器 Dual Step-Down Ctlr w/Saturation Prot RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1540AETJ+T 功能描述:DC/DC 開關(guān)控制器 Dual Step-Down Ctlr w/Saturation Prot RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1540ETJ 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1540ETJ+ 功能描述:DC/DC 開關(guān)控制器 Dual Step-Down Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1540ETJ+T 功能描述:DC/DC 開關(guān)控制器 Dual Step-Down Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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