MAX5092 查看數據表（PDF） - Maxim Integrated
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MAX5092 Datasheet PDF : 23 Pages
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MAX5092/MAX5093
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 (VOUT + 0.3V)
CT to SGND................................................-0.3V to (VVL + 0.3V)
OUT Current (IOUT) Short Circuit to PGND_LDO,
(VIN ≤ 28V).............................................................Continuous
Note 1: As per JEDEC Standard 51 (Multilayer Board).
RESET Sinking Current.........................................................5mA
Continuous Power Dissipation (TA = +70°C)
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
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
(VIN = VEN = 14V, IOUT = 1mA, CIN = 47μF, CBSOUT = 22μF, COUT = 10μF, CVL = 1μF, TA = TJ = -40°C to +125°C, unless otherwise
noted. See Figures 4–7 as applicable. Typical specifications are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
INPUT SUPPLY
Input Voltage Range
Internal Input Undervoltage
Lockout
Supply Current (Boost Converter
Off)
Supply Current (Boost Converter
On)
Shutdown Supply Current
VIN
(Note 3)
4
VUVLOF VIN falling
3.0
VUVLOR VIN rising
3.4
LDO mode,
TJ = -40°C to +125°C
IQ
IOUT = 100µA
(Note 4)
LDO mode, IOUT = 250mA
IS
VIN = 5V
ISHDN
VEN ≤ +0.4V
TJ = -40°C to +125°C
(Note 4)
BOOST CONVERTER
Minimum BSOUT Output Current
IBSOUT VIN = 4V
Boost Converter Enable
Threshold
VBST_EN VBSOUT – VOUT falling (Note 5)
1.7
Boost Converter Disable
Threshold
VBST_DIS VBSOUT – VOUT rising (Note 5)
2.2
Boost Converter Disable
Hysteresis
VBST_HYS
BSOUT Output Voltage
Maximum BSOUT Output Voltage
VBSOUT VIN = 4V, BSFB = SGND, VOUT = 5V
MAX5092_
VBSOUT(MAX) MAX5093_
BSFB Regulation Voltage
VBSFB
1.18
BSFB Input Bias Current
IBSFB
Boost Internal Switch
On-Resistance
RDS(ON)
Boost Internal Switch Minimum
Off-Time
tOFF
0.80
TYP
3.2
3.6
65
70
0.4
6
250
2.0
2.5
0.5
7.00
11
12
1.24
0.5
1
MAX UNITS
72
V
3.4
V
3.8
85
µA
100
1.0
mA
10
µA
mA
2.3
V
2.8
V
V
V
V
1.30
V
100
nA
1.2
Ω
1.25
µs
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