MAX8645YETI+ Maxim Integrated Products, MAX8645YETI+ Datasheet - Page 7

• 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
= V
1x/1.5x/2x White LED Charge Pumps with Two
EN_
= 3.6V, circuit of Figure 2, T
V
V
ENM1,
ENM2
V
I
-0.2
-0.4
-0.6
-0.8
-1.0
OUT
OUT
1.0
0.8
0.6
0.4
0.2
0
_______________________________________________________________________________________
0
SINGLE-WIRE DIMMING RESPONSE
ACCURACY vs. OUTPUT CURRENT
LDO OUTPUT VOLTAGE
50
OUTPUT CURRENT (mA)
10ms/div
100
A
= +25°C, unless otherwise noted.)
V
150
I
LDO_
LDO_
MAX8645Y toc19
Typical Operating Characteristics (continued)
V
IN
200
- V
LOAD-TRANSIENT RESPONSE
OUT
5V/div
0V
500mA/div
0A
2V/div
0V
LDOs in 4mm x 4mm TQFN
= 77mV, V
NEAR DROPOUT
10μs/div
LDO_
= 2.6V
V
I
LDO_
LDO_
MAX8645Y toc23
140
120
100
80
60
40
20
0
0
V
LDO_
50mV/div
AC-COUPLED
100mA
1mA
LOAD-TRANSIENT RESPONSE
LDO DROPOUT VOLTAGE
= 2.6V
vs. OUTPUT CURRENT
50
OUTPUT CURRENT (mA)
10μs/div
100
150
MAX8645Y toc22
200
50mV/div
AC-COUPLED
100mA
1mA
7