MAX1553ETA+T Maxim Integrated Products, MAX1553ETA+T Datasheet - Page 4

• Manufacturer Part Number: MAX1553ETA+T
• Description: IC LED DRIVR WHITE BCKLGT 8-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX1553ETA+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: 2.7 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: 480mA
• Internal Switch(s): Yes
• Number Of Segments: 10
• Operating Supply Voltage: 2.7 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

SOT23 Dual-Input USB/AC Adapter 1-Cell Li+
Battery Chargers
(V
4
DC
300
250
200
150
100
100
-50
-20
_______________________________________________________________________________________
50
80
60
40
20
0
0
= 5V, V
0
0
DC VOLTAGE HEADROOM (V
0.5
vs. DC VOLTAGE HEADROOM
USB
0.1
1.0
USB CHARGE CURRENT
vs. BATTERY VOLTAGE
BATTERY VOLTAGE (V)
CHARGE CURRENT
= 0, I
1.5
0.2
2.0
V
BAT
BAT
2.5
2.0
1.5
1.0
0.5
2.5
= 3.8V, V
0
0.3
= 0, C
0
3.0
DC
V
0 TO 5V OR V
SWEEPING DC 0 TO 5V
OFF-BATTERY LEAKAGE CURRENT
DC
V
- V
BAT
DC
3.5
= 0, SWEEPING USB
BAT
0.4
BAT
FALLING
= 4.2V
DC OR USB INPUT VOLTAGE (V)
1
vs. DC INPUT VOLTAGE
) (V)
4.0
= 1µF, T
USB
0.5
4.5
= 0,
2
A
= +25°C, unless otherwise noted.)
3
100
300
250
200
150
100
-20
-50
80
60
40
20
50
0
0
25
0
4
V
USB VOLTAGE HEADROOM (V
BAT
vs. USB VOLTAGE HEADROOM
vs. AMBIENT TEMPERATURE
= 3.8V, V
35
0.1
THERMAL LIMIT ACTIVATED
DC CHARGE CURRENT
5
V
DC
CHARGE CURRENT
TEMPERATURE (°C)
45
= 0, V
DC
0.2
= 5V
BAT
55
= 3.8V, V
Typical Operating Characteristics
0.3
65
USB
USB
- V
0.4
FALLING
BAT
0A
0V
0V
0V
75
) (V)
USB-TO-DC TRANSITION WAVEFORM
0.5
85
4.22
4.21
4.20
4.19
4.18
300
250
200
150
100
-50
50
0
400ms/div
-40
0
BAT OPEN
BATTERY TERMINATION VOLTAGE
0.5
-15
1.0
vs. BATTERY VOLTAGE
DC CHARGE CURRENT
vs. TEMPERATURE
BATTERY VOLTAGE (V)
TEMPERATURE (°C)
1.5
MAX1551/55 toc08
10
2.0
2.5
35
BATTERY
CURRENT
200mA/div
V
5V/div
V
2V/div
V
5V/div
3.0
USB
POK
DC
3.5
60
4.0
85
4.5