MAX1554ETA+T Maxim Integrated Products, MAX1554ETA+T Datasheet - Page 2

• Manufacturer Part Number: MAX1554ETA+T
• Description: IC LED DRIVR WHITE BCKLGT 8-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX1554ETA+T

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Voltage - Supply: 3.15 V ~ 5.5 V
• Voltage - Output: 40V
• Mounting Type: Surface Mount
• Package / Case: 8-TDFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 970mA
• Internal Switch(s): Yes
• Number Of Segments: 10
• Operating Supply Voltage: 3.15 V to 5.5 V
• Maximum Power Dissipation: 1951 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency: -
• Efficiency: -
• Lead Free Status / Rohs Status: Details

ABSOLUTE MAXIMUM RATINGS
V
LX to GND ..............................................................-0.3V to +45V
EN, BRT, SS to GND...................................-0.3V to (V
I
Continuous Power Dissipation (T
High-Efficiency, 40V Step-Up
Converters for 2 to 10 White LEDs
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
2
LX
Supply Voltage
Undervoltage Lockout Threshold
Quiescent Current
Shutdown Supply Current
OV Threshold
OV Input Bias Current
BRT Input Resistance
TIMING CONTROL
Maximum On-Time
On-Time Constant (K)
Minimum Off-Time
ERROR AMPLIFIER
FB Threshold
FB Input Bias Current
N-CHANNEL SWITCH
LX On-Resistance
CC
CC
8-Pin 3mm x 3mm TDFN
(derate 24.4mW/°C above +70°C) .............................1951mW
...................................................................................0.9A
, FB, OV to GND..............................................-0.3V to +6.0V
_______________________________________________________________________________________
= 3.3V, V
PARAMETER
OV
= 0V, C
OUT
= 1µF, R
A
= +70°C)
SENSE
MAX1553
MAX1554
V
Not switching
Switching
V
Rising edge
V
0 < V
V
t
V
V
V
ON
CC
EN
OV
CC
BRT
BRT
FB
= K / V
= 10Ω, T
= 1.0V
= 0V
rising or falling, 35mV hysteresis typical
= 1V
= 3.3V
BRT
= 1.25V
= 3.3V
< 1.5V, EN = V
CC
CC
A
+ 0.3V)
= 0°C to +85°C, unless otherwise noted. Typical values are at T
CONDITIONS
RMS
T
T
T
T
T
T
A
A
A
A
A
A
= +25°C
= +85°C
= +25°C
= +85°C
= +25°C
= +85°C
CC
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
3.15
2.35
1.18
MIN
200
150
192
2.7
2.0
TYP
0.33
0.44
1.25
400
250
203
280
100
2.5
0.1
3.4
6.3
0.8
10
15
1
1
MAX
5.50
2.65
0.65
1.33
200
600
350
212
200
5.5
0.9
4.8
1.4
1
A
= +25°C.)
UNITS
µs-V
mA
mV
µA
nA
k
nA
µs
ns
V
V
V