MAX1574ETB+T Maxim Integrated Products, MAX1574ETB+T Datasheet - Page 3

• Manufacturer Part Number: MAX1574ETB+T
• Description: IC LED DRVR WHITE BCKLGT 10-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX1574ETB+T

• Constant Current: Yes
• Topology: Linear (LDO), Switched Capacitor (Charge Pump)
• Number Of Outputs: 3
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: White LED
• Frequency: 1MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 5V
• Mounting Type: Surface Mount
• Package / Case: 10-TDFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 60mA
• Internal Switch(s): Yes
• Efficiency: 83%
• Number Of Segments: 3
• Low Level Output Current: 60 mA
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Supply Current: 2 mA
• Maximum Power Dissipation: 1454 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
(Note 1)
(Circuit of Figure 2, V
Note 1: Limits are 100% production tested at T
Note 2: LED current matching is defined as: (I
Note 3: Dropout voltage is defined as the LED_-to-GND voltage at which current into LED_ drops 10% from the value at V
EN Input Current
EN Low Shutdown Delay
EN t
EN t
Initial EN t
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
IN
100
= 3.6V, V
90
80
70
60
50
40
30
20
10
LO
HI
0
2.7
(Figure 1)
(Figure 1)
I
LED
EFFICIENCY vs. INPUT VOLTAGE
HI
= 2mA
(Figure 1)
3.0
GND
I
LED
PARAMETER
INPUT VOLTAGE (V)
= 8mA
= 0V, EN = IN, R
I
LED
3.3
IN
_______________________________________________________________________________________
= 20mA
= 3.6V, EN = IN, driving three white LEDs, T
180mA, 1x/2x, White LED Charge Pump
I
3.6
LED
= 40mA
V
IN
3.9
FALLING
SET
4.2
= 13.7kΩ, T
LED
A
EN = GND or 5.5V, T
EN = GND or 5.5V, T
Only required for first EN_ pulse
300
250
200
150
100
= +25°C. Limits over the operating temperature range are guaranteed by design.
50
0
- I
2.7
A
AVG
I
I
I
I
INPUT CURRENT vs. INPUT VOLTAGE
LED
LED
LED
LED
= -40°C to +85°C, unless otherwise noted. Typical values are at T
= 40mA
= 20mA
= 8mA
= 2mA
) / I
3.0
AVG
INPUT VOLTAGE (V)
CONDITIONS
3.3
A
= +25°C, unless otherwise noted.)
A
A
= +25°C
= +85°C
Typical Operating Characteristics
3.6
in 3mm x 3mm TDFN
V
IN
3.9
FALLING
4.2
25
20
15
10
5
0
2.5
MIN
1.0
0.5
0.5
50
INPUT RIPPLE vs. SUPPLY VOLTAGE
3.0
20mA/LED
+160
TYP
0.01
SUPPLY VOLTAGE (V)
0.1
20
3.5
2
4.0
MAX
500
3.3
1
LED_
4.5
60mA/LED
A
8mA/LED
2mA/LED
= 0.2V.
= +25°C.)
5.0
UNITS
ms
µA
µs
µs
µs
°C
°C
5.5
3