Datasheet

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,
(V
IN
≤ 28V).............................................................Continuous
RESET Sinking Current.........................................................5mA
Continuous Power Dissipation (T
A
= +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
(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
V
UVLOF
V
IN
falling 3.0 3.2 3.4
V
V
UVLOR
V
IN
rising 3.4 3.6 3.8
Supply Current (Boost Converter
Off)
I
Q
LDO mode,
I
OUT
= 100µA
T
J
= -40°C to +125°C
(Note 4)
65 85
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
V
BST_EN
V
BSOUT
– V
OUT
falling (Note 5) 1.7 2.0 2.3 V
Boost Converter Disable
Threshold
V
BST_DIS
V
BSOUT
– V
OUT
rising (Note 5) 2.2 2.5 2.8 V
Boost Converter Disable
Hysteresis
V
BST_HYS
0.5 V
BSOUT Output Voltage V
BSOUT
V
IN
= 4V, BSFB = SGND, V
OUT
= 5V 7.00 V
Maximum BSOUT Output Voltage V
BSOUT(MAX)
MAX5092_ 11
V
MAX5093_ 12
BSFB Regulation Voltage V
BSFB
1.18 1.24 1.30 V
BSFB Input Bias Current I
BSFB
100 nA
Boost Internal Switch
On-Resistance
R
DS(ON)
0.5 1.2 Ω
Boost Internal Switch Minimum
Off-Time
t
OFF
0.80 1 1.25 µs
MAX5092/MAX5093 4V to 72V Input LDOs with Boost Preregulator
www.maximintegrated.com
Maxim Integrated │ 2
Note 1: As per JEDEC Standard 51 (Multilayer Board).
Absolute Maximum Ratings
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