參數(shù)資料
型號(hào)： 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(hù)、動(dòng)態(tài)輸出和線性穩(wěn)壓器
文件頁(yè)數(shù)： 4/49頁(yè)
文件大小： 794K
代理商： MAX1540A
M
Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
4
_______________________________________________________________________________________
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
70
TYP
145
MAX
350
UNITS
FB_ = GND
MAX1540A
FB_ = V
CC
or
adjustable
50
115
220
FB1 = OUT1
FB2 = GND
400
90
700
170
1500
350
OUT_ Input Resistance
R
OUT
_
MAX1541
FB2 = V
CC
or
adjustable
60
130
270
k
Ω
OUT_ Discharge Mode On-
Resistance
R
D S C H ARGE
10
25
Ω
OUT_ Synchronous-Rectifier
Discharge-Mode Turn-On Level
0.2
0.3
0.4
V
Soft-Start Ramp Time
t
SS
Rising edge on ON_ to full current limit
1.7
169
216
304
447
228
296
412
618
135
400
ms
TON = GN D ( 620kH z)
TON = REF (485kHz)
TON = op en ( 345kH z)
TON = V
CC
(235kHz)
TON = GN D ( 460kH z)
TON = REF (355kHz)
TON = op en ( 255kH z)
TON = V
CC
(170kHz)
149
191
274
402
201
260
371
556
120
190
242
335
491
256
331
453
679
150
500
DH1 On-Time
t
ON1
V+ = 15V,
V
OUT1
= 1.5V
(Note 3)
ns
DH2 On-Time
t
ON2
V+ = 15V,
V
OUT2
= 1.5V
(Note 3)
ns
On-Time Tracking
Minimum Off-Time
LINEAR REGULATOR (LDO)
(Note 1)
t
ON2
with respect to t
ON1
(Note 3)
(Note 3)
%
ns
t
OFF(MIN)
0 < I
LDOOUT
< 10mA
0 < I
LD OOU T
< 100m A
4.85
4.70
5.0
5.10
5.10
MAX1540A LDO Output-Voltage
Accuracy
V
LDOOUT
ON1 = ON2 = GND,
V+ = 6V to 28V
V
0 < I
LDOOUT
< 10mA
4.85
5.0
5.10
MAX1541 LDO Output-Voltage
Accuracy (Fixed V
LDOOUT
)
V
LDOOUT
FBLDO = ON1 =
ON2 = GND,
V
LDOIN
= 6V to 28V
FBLDO = LDOOUT,
ON1 = ON2 = GND,
V
LDOIN
= 4.5V to
28V
0 < I
LD OOU T
< 100m A
4.70
5.10
V
0 < I
LDOOUT
< 10mA
1.212
1.25
1.275
MAX1541 LDO Feedback
Accuracy (Adjustable V
LDOOUT
)
V
FBLDO
0 < I
LD OOU T
< 100m A
1.175
1.275
V
MAX1541 LDO Output
Adjust Range
1.175
24
V
LDOOUT Short-Circuit Current
FBLDO Input Bias Current
130
mA
μA
I
FBLDO
-0.1
+0.1
800
MAX1540A: V+ - V
LDOOUT
, I
LDOOUT
= 50mA
MAX1541: V
LDOIN
- V
LDOOUT
,
I
LDOOUT
= 50mA
500
Dropout Voltage
500
800
mV
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參數(shù)描述
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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