MAX5088 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX5088 Datasheet PDF : 24 Pages
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2.2MHz, 2A Buck Converters with an
Integrated High-Side Switch
ABSOLUTE MAXIMUM RATINGS
V+ to PGND............................................................-0.3V to +25V
BST/VDD, DRAIN to SGND ....................................-0.3V to +30V
SGND to PGND .....................................................-0.3V to +0.3V
BST/VDD to SOURCE...............................................-0.3V to +6V
SOURCE to SGND..................................................-0.6V to +25V
SOURCE or DRAIN Maximum Peak Current...............5A for 1ms
VL to SGND ................-0.3V to the lower of +6V and (V+ + 0.3V)
SYNC, EN, DL, CKO, OSC, COMP,
FB to SGND...............................................-0.3V to (VL + 0.3V)
BYPASS, CKO, OSC, COMP, FB, EN, SYNC, RESET,
PGOOD Maximum Input Current .................................±50mA
*As per JEDEC51 Standard (multilayer board).
RESET, PGOOD to SGND ........................................-0.3V to +6V
BYPASS to SGND..................................................-0.3V to +2.2V
VL and BYPASS Short-Circuit Duration to SGND ......Continuous
Continuous Power Dissipation* (TA = +70°C)
16-Pin TQFN (derate 33mW/°C above +70°C) ..........2666mW
Package Thermal Resistance (junction to case) ............1.7°C/W
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature Range ............................-65°C to +150°C
Storage Temperature Range .............................-65°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
(V+ = VL = 5V or V+ = 5.5V to 23V, VEN = 5V, TA = TJ = -40°C to +125°C, unless otherwise noted. Circuits of Figures 5 and 6. Typical
values are at TA = TJ = +25°C.) (Note 1)
PARAMETER
SYSTEM SPECIFICATIONS
Input Voltage Range
V+ Operating Supply Current
SYMBOL
CONDITIONS
V+
V+ = VL
IQ
V+ = 12V, VFB = 0.8V
ROSC = 10kΩ, no switching
MIN TYP MAX UNITS
5.5
23.0
V
4.5
5.5
V
1.8
2.5
mA
V+ Standby Supply Current
ISTBY
V+ = 12V, VEN = 0V, PGOOD (MAX5089),
RESET, CKO unconnected (MAX5088),
ROSC = 10kΩ
1
1.4
mA
Efficiency
Nonsynchronous (MAX5088),
fSW = 1.25MHz, V+ = 12V, IOUT = 1.5A,
79
VOUT = 3.3V
η
%
Synchronous (MAX5089),
fSW = 300kHz, V+ = 12V, IOUT = 1.5A,
90
VOUT = 3.3V
VL REGULATOR (VL)/BYPASS OUTPUT (BYPASS)
VL Undervoltage Lockout
VUVLO VL falling
4.1
4.3
V
VL Undervoltage Lockout
Hysteresis
VHYST
137
mV
VL Output Voltage
BYPASS Output Voltage
VL
VBYPASS
V+ = 5.5V to 23V, IVL = 0 to 40mA
V+ = VL = 5.2V
5.0
5.2
5.5
V
1.98
2
2.02
V
BYPASS Load Regulation
∆VBYPASS
IBYPASS steps from 0 to 50µA,
V+ = VL = 5.2V
0
1.2
10
mV
2 _______________________________________________________________________________________
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