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4V to 72V Input LDOs with Boost Preregulator
ABSOLUTE MAXIMUM RATINGS
IN, EN, LX, BSOUT to SGND..................................-0.3V to +80V
PGND_BST, PGND_LDO to SGND .......................-0.3V to +0.3V
RESET , OUT, OUT_SENSE to SGND .....................-0.3V to +12V
BSOUT to LX (MAX5092_)......................................-0.3V to +12V
VL, SET, BSFB, SGND..............................................-0.3V to +6V
HOLD to SGND….....................................-0.3V to (V OUT + 0.3V)
CT to SGND.................................................-0.3V to (V VL + 0.3V)
OUT Current (I OUT ) Short Circuit to PGND_LDO,
RESET Sinking Current .........................................................5mA
Continuous Power Dissipation (T A = +70°C)
16-Pin Thin QFN (derate 33.3mW/°C
above +70°C)...............................................2666mW (Note 1)
Operating Temperature Range .........................-40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(V IN ≤ 28V) ..............................................................Continuous
Note 1: As per JEDEC Standard 51 (Multilayer Board).
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V IN = V EN = 14V, I OUT = 1mA, C IN = 47μF, C BSOUT = 22μF, C OUT = 10μF, C VL = 1μF, T A = T J = -40°C to +125°C, unless otherwise
noted. See Figures 4–7 as applicable. Typical specifications are at T A = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
INPUT SUPPLY
Input Voltage Range
V IN
(Note 3)
4
72
V
Internal Input Undervoltage
Lockout
Supply Current (Boost Converter
Off)
V UVLOF
V UVLOR
I Q
V IN falling
V IN rising
LDO mode,
I OUT = 100μA
T J = -40°C to +125°C
(Note 4)
3.0
3.4
3.2
3.6
65
3.4
3.8
85
V
μA
LDO mode, I OUT = 250mA
70
100
Supply Current (Boost Converter
On)
I S
V IN = 5V
0.4
1.0
mA
Shutdown Supply Current
I SHDN
V EN ≤ +0.4V
T J = -40°C to +125°C
(Note 4)
6
10
μA
BOOST CONVERTER
Minimum BSOUT Output Current
I BSOUT
V IN = 4V
250
mA
Boost Converter Enable
Threshold
Boost Converter Disable
Threshold
V BST_EN
V BST_DIS
V BSOUT – V OUT falling (Note 5)
V BSOUT – V OUT rising (Note 5)
1.7
2.2
2.0
2.5
2.3
2.8
V
V
Boost Converter Disable
Hysteresis
V BST_HYS
0.5
V
BSOUT Output Voltage
Maximum BSOUT Output Voltage
V BSOUT
V BSOUT(MAX)
V IN = 4V, BSFB = SGND, V OUT = 5V
MAX5092_
MAX5093_
7.00
11
12
V
V
BSFB Regulation Voltage
BSFB Input Bias Current
Boost Internal Switch
On-Resistance
Boost Internal Switch Minimum
Off-Time
V BSFB
I BSFB
R DS(ON)
t OFF
1.18
0.80
1.24
0.5
1
1.30
100
1.2
1.25
V
nA
Ω
μs
2
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相关代理商/技术参数
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制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:4V to 72V Input LDOs with Boost Preregulator
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功能描述:低压差稳压器 - LDO 4V to 72V LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
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