MAX8645YETI+ Maxim Integrated Products, MAX8645YETI+ Datasheet - Page 5

• Manufacturer Part Number: MAX8645YETI+
• Description: IC LED DRVR WHITE BCKLGT 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX8645YETI+

• Constant Current: Yes
• Topology: Linear (LDO), Switched Capacitor (Charge Pump)
• Number Of Outputs: 8
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 1MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 5.5V
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 200mA
• Internal Switch(s): Yes
• Efficiency: 85%
• Number Of Segments: 8
• Low Level Output Current: 400000 uA (Typ)
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Supply Current: 5.5 mA
• Maximum Power Dissipation: 1666 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Led Driver Application: Backlighting And Flash, Digital Cameras And Camcorders
• No. Of Outputs: 8
• Output Current: 200mA
• Output Voltage: 5.5V
• Input Voltage: 2.7V To 5.5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(V
IN
900
800
700
600
500
400
300
200
100
105
90
75
60
45
30
15
= V
10
0
0
9
8
7
6
5
4
3
2
1
0
2.7
-40
2.7
EN_
VOLTAGE WITH FLASH AND MAIN LEDs
TEMPERATURE WITH SIX MAIN LEDs
INPUT RIPPLE VOLTAGE vs. SUPPLY
I
FOUR MAIN LEDs AT 15mA EACH
I
FLASH
FLASH
BATTERY CURRENT vs. SUPPLY
3.1
= 3.6V, circuit of Figure 2, T
LED CURRENT vs. AMBIENT
3.0
-15
VOLTAGE DRIVING FLASH
= 160mA
= 400mA
I
FLASH
3.5
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
= 40mA
3.3
10
1x/1.5x/2x White LED Charge Pumps with
_______________________________________________________________________________________
3.9
T
I
FLASH
I
A
FLASH
(°C)
4.3
3.6
= 160mA
35
= 80mA
I
FLASH
4.7
3.9
60
= 400mA
5.1
4.2
5.5
A
85
= +25°C, unless otherwise noted.)
Two LDOs in 4mm x 4mm TQFN
Typical Operating Characteristics (continued)
16.0
15.8
15.6
15.4
15.2
15.0
14.8
14.6
14.4
14.2
14.0
160
150
140
130
120
110
100
450
400
350
300
250
200
150
100
90
80
50
0
-40
2.7
2.7
LED CURRENT MATCHING vs. SUPPLY
V
NO LOAD, BOTH LDOs
ENM_
CURRENT vs. SUPPLY VOLTAGE
VOLTAGE WITH SIX MAIN LEDs
3.1
3.1
LED CURRENT vs. AMBIENT
TEMPERATURE WITH FLASH
LDO GROUND-PIN SUPPLY
= V
-15
ENF
3.5
3.5
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
= 0V, V
10
3.9
3.9
T
A
ENLDO
(°C)
4.3
4.3
35
150mA, BOTH LDOs
= V
IN
4.7
4.7
60
5.1
5.1
5.5
5.5
85
102.0
101.5
101.0
100.5
100.0
99.5
99.0
98.5
98.0
100
1.8
1.5
1.2
0.9
0.6
0.3
10
1
0
2.7
2.7
1
LED CURRENT MATCHING vs. SUPPLY
INPUT RIPPLE VOLTAGE vs. SUPPLY
VOLTAGE WITH TWO FLASH LEDs
INDIVIDUAL MAIN LED CURRENT
VOLTAGE WITH SIX MAIN LEDs
3.1
3.1
3.5
3.5
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
I
LED
I
vs. R
LED
R
3.9
3.9
I
SETM
LED
= 1.5mA
= 4.5mA
10
= 15mA
SETM
(kΩ)
4.3
4.3
4.7
4.7
5.1
5.1
100
5.5
5.5
5