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
ELECTRICAL CHARACTERISTICS (continued)
(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
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
SOFT-START
Digital Soft-Start Period
Soft-Start Steps
ERROR AMPLIFIER (FB and COMP)
FB to COMP Transconductance
gM
FB Input Bias Current
IFB
FB Input Voltage Set Point
VFB
COMP Sink-and-Source Current
Capability
ICOMP
INTERNAL MOSFETs
Internal 6-bit DAC
4096
64
Clock
periods
Steps
1.20
1.8
2.75
mS
250
nA
0.5940 0.601 0.6095
V
100 150
µA
On-Resistance n-Channel Power
MOSFET
RON
V+ = VL = 5.2V, ISINK = 100mA
0.150 0.302
Ω
Leakage Current
ILEAK
VEN = 0V, VDRAIN = 23V,
SOURCE = PGND
20
µA
Minimum Output Current
Current Limit
IOUT
ILIMIT
VOUT = 3.3V, V+ = 12V (Note 2)
2
A
2.2
2.8
3.5
A
On-Resistance Internal Low-Side
Switch
RONLSW ISWITCH = 50mA, V+ = VL = 5.2V
20
38
Ω
SYNCHRONOUS RECTIFIER DRIVER (DL) (MAX5089 Only)
On-Resistance nMOS
RONDLN ISINK = 0.1A
On-Resistance pMOS
RONDLP ISOURCE = 0.1A
Peak Sink Current
IIDL_SINK
Peak Source Current
IIDL_SOURCE
OSCILLATOR (OSC)/SYNCHRONIZATION (SYNC)/CLOCK OUTPUT (CKO) (MAX5088 Only)
1
6.7
Ω
1.9 11.1
Ω
1
A
0.75
A
Clock Output-High Level
Clock Output-Low Level
Switching Frequency
Minimum Controllable On-Time
VCKOH
VCKOL
fSW
tON_MIN
VL = 5.2V, ISOURCE = 5mA
VL = 5.2V, ISINK = 5mA
ROSC = 5.62kΩ
V+ = VL = 5.2V ROSC = 41.2kΩ
ROSC = 10kΩ
3.54
V
0.4
V
1900 2100 2400
275
312
350
kHz
1130 1250 1380
120
ns
Maximum Duty Cycle
DMAX
fSW = 2.2MHz
MAX5088
MAX5089
82 87.5
%
82
87.5
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