Owner's manual

MAX5092/MAX5093
4V to 72V Input LDOs with Boost Preregulator
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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)
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.
Note 1: As per JEDEC Standard 51 (Multilayer Board).
IN, EN, LX, BSOUT to SGND..................................-0.3V to +80V
PGND_BST, PGND_LDO to SGND .......................-0.3V to +0.3V
VL, RESET, OUT, OUT_SENSE to SGND ...............-0.3V to +12V
BSOUT to LX (MAX5092_)......................................-0.3V to +12V
SET, BSFB, CT to SGND ..........................................-0.3V to +6V
HOLD to SGND….....................................-0.3V to (V
OUT
+ 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)
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
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
INPUT SUPPLY
Input Voltage Range V
IN
(Note 3) 4 72 V
V
UVLOF
V
IN
falling 3.0 3.2 3.4
Internal Input Undervoltage
Lockout
V
UVLOR
V
IN
rising 3.4 3.6 3.8
V
LDO mode,
I
OUT
= 100µA
T
J
= -40°C to +125°C
(Note 4)
65 85
Supply Current (Boost Converter
Off)
I
Q
LDO mode, I
OUT
= 250mA 70 100
µA
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)
610µA
BOOST CONVERTER
Minimum BSOUT Output Current I
BSOUT
V
IN
= 4V 250 mA
Boost Converter Disable
Threshold
V
BST_DIS
V
IN
rising 7.5 8.0 8.5 V
Boost Converter Disable
Threshold Hysteresis
0.5 V
BSOUT Output Voltage V
BSOUT
V
IN
= 4V, BSFB = SGND 6.65 7.00 7.35 V
MAX5092_ 11
Maximum BSOUT Output Voltage V
BSOUT
(
MAX
)
MAX5093_ 12
V
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