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MAX16834 데이터시트(PDF) 6 Page - Maxim Integrated Products

부품명 MAX16834
상세설명  High-Power LED Driver with Integrated High-Side LED Current Sense and PWM Dimming MOSFET Driver
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제조업체  MAXIM [Maxim Integrated Products]
홈페이지  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX16834 데이터시트(HTML) 6 Page - Maxim Integrated Products

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Pin Description
PIN
TQFN
TSSOP
NAME
FUNCTION
1
3
OVP+
LED-String Overvoltage Protection Input. Connect a resistive voltage-divider between the positive
output, OVP+, and LV to set the overvoltage threshold. OVP+ has a 1.435V threshold voltage with a
200mV hysteresis.
2
4
SGND
Signal Ground
3
5
COMP
Error-Amplifier Output. Connect an RC network from COMP to SGND for stable operation. See the
Feedback Compensation section.
4
6
REF
3.7V Reference Output Voltage. Bypass REF to SGND with a 0.1µF to 0.22µF ceramic capacitor.
5
7
REFI
Current Reference Input. VREFI provides a reference voltage for the current-sense amplifier to set
the LED current.
68
SC
Current-Mode Slope Compensation Setting. Connect to an appropriate external capacitor from SC
to SGND to generate a ramp signal for stable operation.
High-Power LED Driver with Integrated High-Side LED
Current Sense and PWM Dimming MOSFET Driver
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VIN = VHV = 12V, VUVEN = 5V, VLV = VPWMDIM = VSGND, CVCC = 4.7µF, CLCV = 100nF, CREF = 100nF, RSENSE+ = 0.1Ω,
RRT = 10kΩ, TA = +25°C, unless otherwise noted.)
VCC vs. VIN
VIN (V)
26
22
18
14
10
7.02
7.04
7.06
7.08
7.10
7.12
7.14
7.16
7.18
7.20
7.00
6
TA = +125
°C
TA = +25
°C
TA = -40
°C
NDRV RISE/FALL TIME
vs. CAPACITANCE
CAPACITANCE (nF)
9
8
7
6
5
4
3
2
1
10
20
30
40
50
0
010
VIN = 12V
RISE TIME
FALL TIME
VCLV vs. VHV
VHV (V)
26
22
18
14
10
5.01
5.02
5.03
5.04
5.05
5.06
5.07
5.08
5.09
5.10
5.00
6
VIN = 12V
VCLV vs. ICLV
ICLV (mA)
4.5
4.0
3.0 3.5
1.0 1.5 2.0 2.5
0.5
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
5.50
0
05.0
VIN = 12V


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