參數(shù)資料
型號： MAX1540AETJ
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator
中文描述： DUAL SWITCHING CONTROLLER, 620 kHz SWITCHING FREQ-MAX, QCC32
封裝： 5 X 5 MM, 0.80 MM HEIGHT, MO-220-WHHD-2, TQFN-32
文件頁數(shù)： 10/49頁
文件大?。?/td> 794K
代理商： MAX1540AETJ
M
Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
10
______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V
CC
= V
DD
= ON1 = ON2 = 5V,
SKIP
= GND, LDOIN (MAX1541) = V+,
T
A
= -40°C to +85°C
, unless otherwise noted.)
(Note 4)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
High
V
CC
-
0.4V
Open
REF
Low
3.15
1.65
3.85
2.35
0.5
Four-Level Input Logic Levels
TON, OVP/UVP, LSAT,
SKIP
,
FBLANK
V
Note 1:
For the MAX1540A, the gate-driver input supply (V
DD
) is internally connected to the fixed 5V linear-regulator output
(LDOOUT),
and the linear-regulator input supply (LDOIN) is internally connected to the battery voltage input (V+).
Note 2:
When the inductor is in continuous conduction, the output voltage has a DC regulation level higher than the error-comparator
threshold by 50% of the ripple. In discontinuous conduction (
SKIP
= GND, light load), the output voltage has a DC regulation
level higher than the trip level by approximately 1.5% due to slope compensation.
Note 3:
On-time and off-time specifications are measured from 50% point to 50% point at the DH_ pin with LX_ = GND, VBST_ = 5V,
and a 250pF capacitor connected from DH_ to LX_. Actual in-circuit times may differ due to MOSFET switching speeds.
Note 4:
Specifications to -40°C are guaranteed by design, not production tested.
OUT2 EFFICIENCY vs. LOAD CURRENT
(V
OUT2
= 2.5V)
M
LOAD CURRENT (A)
E
1
0.1
55
60
65
70
75
80
85
90
95
100
50
0.01
10
SKIP = GND
SKIP = V
CC
V
IN
= 7V
V
IN
= 12V
V
IN
= 20V
2.5V OUTPUT VOLTAGE (OUT2)
vs. LOAD CURRENT
M
LOAD CURRENT (A)
O
4
3
2
1
2.49
2.50
2.51
2.52
2.53
2.54
2.55
2.48
0
5
SKIP = GND
SKIP = V
CC
OUT1 EFFICIENCY vs. LOAD CURRENT
(V
OUT1
= 1.0V)
M
LOAD CURRENT (A)
E
1
0.1
55
60
65
70
75
80
85
90
95
100
50
0.01
10
SKIP = GND
SKIP = V
CC
V
IN
= 7V
V
IN
= 12V
V
IN
= 20V
Typical Operating Characteristics
(MAX1541 circuit of Figure 12, V
IN
= 12V, V
DD
= V
CC
= 5V,
SKIP
= GND, TON = REF, T
A
= +25°C, unless otherwise noted.)
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相關(guān)代理商/技術(shù)參數(shù)
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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