Operating Temperature Range ......................... -40°C to +125°C
Junction Temperature ......................................................+150°C
Soldering Temperature (reflow) .......................................+260°C
Lead Temperature (soldering, 10s) ................................. +300ºC
Storage Temperature Range ............................ -65°C to +150°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.
Package Information
12-Pin, SWTQFN-EP
Package Code
Outline Number
Land Pattern Number
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θ
JA
)
Junction to Case (θ
JC
)
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θ
JA
)
Junction to Case (θ
JC
)
24.4°C/W
41°C/W
59.3°C/W
6°C/W
T1244Y+4C
21-100312
90-0068
14-Pin, TSSOP
Package Code
Outline Number
Land Pattern Number
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θ
JA
)
Junction to Case (θ
JC
)
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θ
JA
)
Junction to Case (θ
JC
)
100.4°C/W
30°C/W
110°C/W
30°C/W
U14+5C
21-0066
For the latest package outline information and land patterns (footprints), go to
www.maximintegrated.com/packages.
Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
www.maximintegrated.com
Maxim Integrated
│
2
MAX25611A/MAX25611B/
MAX25611C/MAX25611D
Electrical Characteristics
Automotive High-Voltage HB LED Controller
(V
IN
= 12V, C
IN
= C
VCC
= 1μF, NDRV = COMP =
DIMOUT
= PWMDIM = unconnected, V
CS
= V
OVP
= V
GND
= 0V, V
ISENSEP
=
V
ISENSEN
= 45V, V
REFI
= 1.20V. Limits are 100% tested at T
A
= +25°C and T
A
= +125°C. Limits over the operating temperature range
and relevant supply voltage range are guaranteed by design and characterization.) (Note 1)
PARAMETER
SYMBOL
V
IN
Input Voltage Range
V
IN_MAX
V
IN
V
IN_MAX
Quiescient Supply Current
V
CC
REGULATOR
Output Voltage
VCC UVLO Rising
Short-Circuit Current Limit
SWITCHING FREQUENCY
Switching Frequency
Frequency Dither
SLOPE COMPENSATION
Slope Compensation Current
Ramp Height
ANALOG DIMMING
REFI Input Control Voltage Range
REFI Zero Current Threshold
REFI Internal Clamp Voltage
REFI Input Bias Current
LED CURRENT SENSE AMP
Common-Mode Input Range
Differential Signal Range
ISENSEP Input Bias Current
ISENSEN Input Bias Current
I
B_ISENSEP
I
B_ISENSEN
(V
ISENSEP
- V
ISENSEN
) = 200mV,
V
ISENSEP
= 60V
(V
ISENSEP
- V
ISENSEN
) = 200mV,
V
ISENSEN
= 60V
-0.2
0
350
22
+65
200
550
60
V
mV
μA
μA
V
REFI_RNG
V
REFI_ZTH
V
REFI_CLMP
I
REFI
(V
ISENSEP
- V
ISENSEN
) < 5mV
REFI sink = 1μA
V
REFI
= 0V to 5.5V
0.2
0.16
1.25
0.18
1.3
20
1.2
0.20
1.35
500
V
V
V
nA
I
SLOPE
Peak current ramp out from CS pin
per switching period
42.5
50
57.5
μA
f
SW
f
SW_DITH
MAX25611A
MAX25611B
Dither enable
315
1980
350
2200
±6
385
2420
kHz
%
V
CC
VCC
UVLOR
I
VCC_SC
Load = 0.1mA to 15mA
Rising, 1V (typ) hysteresis
V
CC
shorted to GND
4.875
5
4.3
50
5.125
V
V
mA
I
INQ
CONDITIONS
MAX25611A/B
t < 1s, MAX25611A/B
MAX25611C/D
t < 1s, MAX25611C/D
V
OVP
= 1.5V, no switching, T
A
= +25°C
1.8
5
MIN
5
TYP
MAX
36
40
48
52
3.5
mA
V
UNITS
SUPPLY VOLTAGES AND SUPPLY CURRENT
www.maximintegrated.com
Maxim Integrated
│
3
MAX25611A/MAX25611B/
MAX25611C/MAX25611D
Electrical Characteristics (continued)
Automotive High-Voltage HB LED Controller
(V
IN
= 12V, C
IN
= C
VCC
= 1μF, NDRV = COMP =
DIMOUT
= PWMDIM = unconnected, V
CS
= V
OVP
= V
GND
= 0V, V
ISENSEP
=
V
ISENSEN
= 45V, V
REFI
= 1.20V. Limits are 100% tested at T
A
= +25°C and T
A
= +125°C. Limits over the operating temperature range
and relevant supply voltage range are guaranteed by design and characterization.) (Note 1)
PARAMETER
Voltage Gain
SYMBOL
CONDITIONS
(V
ISENSEP
- V
ISENSEN
) = 200mV,
3V < (V
ISENSEP
, V
ISENSEN
) < 60V
V
REFI
= 1.3V,
3V < (V
ISENSEP
, V
ISENSEN
) < 60V
LED Current-Sense
Regulation Voltage
V
SENSE
V
REFI
= 1.2V,
3V < (V
ISENSEP
, V
ISENSEN
) < 60V
V
REFI
= 0.4V,
3V < (V
ISENSEP
, V
ISENSEN
) < 60V
LED Current-Sense
Regulation Voltage (Low Range)
Common-Mode Input
Range Selector
ERROR AMP
Transconductance
COMP Sink Current
COMP Source Current
PWM COMPARATOR
Input Offset Voltage
PWM to NDRV Propagation Delay
CURRENT LIMIT COMPARATOR
Current Limit Threshold
GATE DRIVER (NDRV)
RDSon Pullup pMOS
RDSon Pulldown nMOS
Rise Time
Fall Time
PWM DIMMING
Internal Ramp Frequency
External Sync Frequency Range
External Sync Low-Level Voltage
External Sync High-Level Voltage
f
RAMP
f
DIM
V
PWMDIM_L
V
PWMDIM_H
2
160
60
200
240
2000
0.4
Hz
Hz
V
V
R
NDRV_HIGH
R
NDRV_LOW
t
R
t
F
V
COMP
= 0V, I
SINK
= 100mA
C
NDRV
= 10nF
C
NDRV
= 10nF
1.5
1.5
100
100
Ω
Ω
ns
ns
V
CS_LIMIT
388
418
448
mV
Includes leading edge blanking time
1
90
V
ns
g
M
COMP
ISINK
COMP
ISRC
(V
ISENSEP
- V
ISENSEN
) = 200mV
V
COMP
= 5V
V
COMP
= 0V
1170
1800
300
300
2430
μS
μA
μA
V
REFI
= 1.2V,
0V < V
ISENSEP
, V
ISENSEN
< 3V
V
REFI
= 0.4V,
0V < V
ISENSEP
, V
ISENSEN
< 3V
V
ISENSEP
rising
V
ISENSEP
falling
MIN
4.9
214
194
36
193
35
2.72
2.48
TYP
5
220
200
40
200
40
2.85
2.6
MAX
5.1
226
206
44
207
mV
45
2.98
2.72
V
mV
UNITS
V/V
V
SENSE_LOW
RNG
SEL
RNGSEL
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Maxim Integrated
│
4
MAX25611A/MAX25611B/
MAX25611C/MAX25611D
Electrical Characteristics (continued)
Automotive High-Voltage HB LED Controller
(V
IN
= 12V, C
IN
= C
VCC
= 1μF, NDRV = COMP =
DIMOUT
= PWMDIM = unconnected, V
CS
= V
OVP
= V
GND
= 0V, V
ISENSEP
=
V
ISENSEN
= 45V, V
REFI
= 1.20V. Limits are 100% tested at T
A
= +25°C and T
A
= +125°C. Limits over the operating temperature range
and relevant supply voltage range are guaranteed by design and characterization.) (Note 1)
PARAMETER
DIM Comparator Offset Voltage
DIM Voltage for 100% Duty Cycle
PWMDIM Low to NDRV Low Delay
PWMDIM High to NDRV
High Delay
PWMDIM to LED Turn-Off Time
PWMDIM to LED Turn-On Time
DIMMING MOSFET GATE DRIVER (DIMOUT)
Peak Pullup Current
Peak Pulldown Current
DIMOUT
Low Voltage with
Respect to ISENSEP
SHORT-CIRCUIT HICCUP MODE
Short-Circuit Current Threshold
Short-Circuit Voltage Detect
Threshold
Hiccup Time
THERMAL SHUTDOWN
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
OVERVOLTAGE PROTECTION (OVP)
OVP Threshold Rising
OVP Input Bias Current
V
OVP_TH
I
OVP
Output rising, 70mV hysteresis
V
OVP
= 1.235V
1.17
-500
1.23
1.29
+500
V
nA
T
SHDN
T
HYS
Temperature rising
165
15
°C
°C
V
IOUT_SHRT
V
VOUT_SHRT
t
HICCUP
(V
ISENSEP
- V
ISENSEN
)
(V
ISENSEP
- V
IN
) falling, V
IN
= 12V
After (V
IOUT_SHRT
and
V
VOUT_SHRT
) detected
369
1.15
398
1.55
8192
427
1.95
mV
V
Clock
Cycles
I
DIMOUT_PU
I
DIMOUT_PD
PWMDIM = low,
(V
ISENSEP
- V
DIMOUT
) = 5V (Note 2)
PWMDIM = high,
(V
ISENSEP
- V
DIMOUT
) = 0V (Note 2)
25
10
-5.4
50
25
-5
80
50
-4.6
mA
mA
V
PWMDIM falling edge to rising edge
on
DIMOUT,
C
DIMOUT
= 7nF
PWMDIM rising edge to falling edge
on
DIMOUT,
C
DIMOUT
= 7nF
SYMBOL
V
PWMDIM_OFS
CONDITIONS
MIN
170
3.1
120
88
4.2
3.9
TYP
200
MAX
230
UNITS
mV
V
ns
ns
μs
μs
Note 1:
Limits are 100% tested at T
A
= +25°C and T
A
= +125°C. Limits over the operating temperature range and relevant supply
voltage range are guaranteed by design and characterization.
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