MAX1848ETA+T Maxim Integrated Products, MAX1848ETA+T Datasheet - Page 3

• Manufacturer Part Number: MAX1848ETA+T
• Description: IC LED DRIVR WHITE BCKLGT 8-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX1848ETA+T

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 1MHz ~ 1.5MHz
• Voltage - Supply: 2.6 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-TDFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 500mA
• Internal Switch(s): Yes
• Efficiency: 87%
• Number Of Segments: 3
• Operating Supply Voltage: 2.6 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
• Voltage - Output: -
• Lead Free Status / Rohs Status: Details

DC ELECTRICAL CHARACTERISTICS (continued)
(V+ = 3V, V
noted. Typical values are at T
DC ELECTRICAL CHARACTERISTICS
(V+ = 3V, V
noted. (Note 1)
Note 1: Limits are 100% production tested at T
N-CHANNEL SWITCH
ERROR AMPLIFIER
OSCILLATOR
N-CHANNEL SWITCH
LX On-Resistance
LX Leakage Current
LX Current Limit
Supply Voltage
Undervoltage Lockout Threshold
Quiescent Current
Overvoltage Threshold
OUT Input Bias Current
Output Voltage Range
CTRL to CS Regulation
CS Input Bias Current
CTRL Input Resistance
CTRL Dual Mode Threshold
COMP Pin Resistance to Ground
COMP Output Voltage Swing
Operating Frequency
Maximum Duty Cycle
LX On-Resistance
LX Current Limit
relation using statistical quality control (SQC) methods.
PARAMETER
PARAMETER
OUT
OUT
= 11V, L = 33µH, C
= 11V, L = 33µH, C
_______________________________________________________________________________________
White LED Step-Up Converter in SOT23
A
= +25°C.)
OUT
OUT
= 1µF, C
I
V
Duty cycle = 65%
= 1µF, C
V+ rising, 40mV hysteresis typical
V+ falling
Not switching, V
Switching, V
V+ rising, 1V hysteresis typical
V+ falling
V
V
V
Hysteresis = 25mV typical
Device in shutdown or overvoltage
V
I
Duty cycle = 65%
LX
LX
OUT
OUT
CTRL
CS
CTRL
= 100mA
= 100mA
= V
= V
= 13V
A
= 2V, V+ = 2.6V to 5.5V
= V+, V
CTRL
COMP
= +25°C. Limits over the operating temperature range are guaranteed through cor-
LX
COMP
= 13V
CTRL
/13.33
CS
= 0.15µF, R
= 0.15µF, R
CTRL
= GND
= V+, V
CONDITIONS
CONDITIONS
= V
CS
CS
SENSE
SENSE
T
T
= V+
= GND
V
V
A
A
CTRL
CTRL
= +25°C
= +85°C
= 5Ω, V
= 5Ω, V
> 0.25V
= GND
CTRL
CTRL
= 1V, T
= 1V, T
A
A
= -40° ° C to +85° ° C, unless otherwise
MIN
300
= 0° ° C to +85° ° C, unless otherwise
V
12.25
11.25
DIODE
2.15
2.10
MIN
V+ -
450
100
225
2.6
7.5
0.3
0.9
10
65
85
TYP
0.01
0.05
500
1.4
14.00
13.25
12.25
MAX
1100
2.59
2.56
50.0
240
850
5.5
0.4
2.4
1.6
2.2
30
85
97
2
1
1
MAX
750
2.2
2
UNITS
UNITS
mV/V
MHz
mA
mA
mA
mV
µA
µA
V
µA
kΩ
kΩ
Ω
%
Ω
V
V
V
V
3