MAX1575ETE+T Maxim Integrated Products, MAX1575ETE+T Datasheet - Page 4

• Manufacturer Part Number: MAX1575ETE+T
• Description: IC LED DRVR WHITE BCKLGT 16-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX1575ETE+T

• Constant Current: Yes
• Topology: Linear (LDO), Switched Capacitor (Charge Pump)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 1MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 5V
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 30mA
• Internal Switch(s): Yes
• Efficiency: 85%
• Number Of Segments: 6
• Low Level Output Current: 30 mA
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Supply Current: 2 mA
• Maximum Power Dissipation: 1349 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

V
OUT
V
I
IN
IN
White LED 1x/1.5x Charge Pump
for Main and Sub-Displays
4
(V
OPERATING WAVEFORMS (1.5x)
IN
123
122
121
120
119
118
117
_______________________________________________________________________________________
= 3.6V, ENM = ENS = IN, circuit of Figure 2, T
2.7
OUTPUT CURRENT vs. SUPPLY VOLTAGE
DRIVING SIX LEDs AT 20mA EACH
3.1
400ns/div
3.5
SUPPLY VOLTAGE (V)
AND V
V
V
3.9
I
ENM
OUT
OUT
ENS
MAX1575 toc10
4.3
4.7
200mV/div
AC-COUPLED
50mV/div
AC-COUPLED
50mA/div
0
DIMMING RESPONSE
5.1
10ms/div
5.5
AND V
V
V
ENM
ENS
OUT
100
I
10
Typical Operating Characteristics (continued)
IN
1
A
1
MAX1575 toc13
= +25°C, unless otherwise noted.)
100% BRIGHTNESS SETTING
STARTUP WAVEFORMS
LED CURRENT vs. R
2V/div
50mA/div
0
2V/div
R
1ms/div
SET
10
(kΩ)
V
I
OUT
OUT
V
SET
IN
MAX1575 toc11
LINE TRANSIENT 3.8V TO 3.3V TO 3.8V
100
5V/div
100mA/div
0
2V/div
0
40μs/div
V
V
V
ENM
OUT
OUT
V
I
I
IN
IN
IN
MAIN STARTUP WITH SUB-DISPLAY ON
OPERATING WAVEFORMS (1x)
MAX1575 toc14
400ns/div
1V/div
1V/div
AC-COUPLED
50mA/div
0mA
1ms/div
MAX1575 toc09
MAX1575 toc12
200mV/div
AC-COUPLED
50mV/div
AC-COUPLED
50mA/div
0mA
5V/div
100mA/div
0
500mV/div