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MAX20050 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX20050
Description  2A Synchronous-Buck LED Drivers with Integrated MOSFETs
PDF  23 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX20050 Datasheet(HTML) 4 Page - Maxim Integrated Products

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(VIN = 12V, VREFI = 1.2V, VPWM = VCC, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CS Common-Mode Range
Input Selector
RNGSEL
VCS+ rising
2.75
2.85
2.95
V
VCS+ falling
2.5
2.6
2.7
VCS+ rising, MAX20053D
2.73
2.85
2.95
VCS+ falling, MAX20053D
2.47
2.6
2.7
Cycle-by-Cycle Current
Limit
CSLIM
VCS- > OUTVTH_LOW
285
300
315
mV
VCS- > OUTVTH_LOW, MAX20053D
282
300
315
VCS- < OUTVTH_LOW
CSACC
- 5
CSACC
CSACC
+ 5
Transconductance
gM
VCS+ - VCS- = 200mV
480
600
720
μS
Open-Loop DC Gain
75
dB
COMP Bias Current
COMPIBIAS
PWM = 0
-200
+200
nA
COMP Sink Current
COMPISINK
VCOMP = 5V
85
100
115
μA
VCOMP = 5V, MAX20053D
80
100
115
COMP Source Current
COMPISRC
VCOMP = 0V
85
100
115
μA
VCOMP = 0V, MAX20053D
80
100
115
High-Side DMOS RDSON
RON,HS
ILX = 200mA, VCS+ = 3V
170
340
mΩ
Low-Side DMOS RDSON
RON,LS
VCC = 5V, ILX = 200mA
140
300
mΩ
LX Rise Time
tRISE,LS
10
ns
Switching Frequency
fSW
MAX20050/MAX20051, frequency dither
disabled
360
400
440
kHz
MAX20052/MAX20053, frequency dither
disabled
1890
2100
2310
Minimum On-Time
tON_MIN
50
80
120
ns
Minimum Off-Time
tOFF_MIN
50
80
120
ns
MAX20053D
40
60
90
Spread-Spectrum Range
SS
Not applicable to B version
±3
%
PWM Input Frequency
PWMFR
10
2000
Hz
PWM-to-LX Delay
PWMDLY
Rising (during regulation)
2
5
μs
Falling (during regulation)
2
5
PWM Threshold
PWMVTHR
Rising
2
V
PWMVTHF
Falling
800
mV
PWM Pullup Current
PWMRIN
VIN = 12V
1
2
3
μA
PWM Shutdown Timer
PWMSHDW
PWM low time to enter shutdown mode
140
210
300
ms
Startup Time
tSTUP
IN, PWM rising to LX delay
180
250
350
μs
Thermal Shutdown
Rising
165
°C
Hysteresis
10
°C
MAX20050–MAX20053
2A Synchronous-Buck LED Drivers
with Integrated MOSFETs
www.maximintegrated.com
Maxim Integrated │ 4
Electrical Characteristics (continued)



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