MAX8645YETI+ Maxim Integrated Products, MAX8645YETI+ Datasheet - Page 3

• 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

ELECTRICAL CHARACTERISTICS (continued)
(V
T
1x to 1.5x or 1.5x to 2x Mode
Transition Threshold
Input Voltage-Mode Transition
Hysteresis
Charge-Pump Maximum OUT
Current
Open-Loop OUT Resistance
Charge-Pump Short-Circuit
Current
Switching Frequency
OUT Pulldown Resistance in
Shutdown
LED DRIVER
SET_ Bias Voltage
SET_ Leakage in Shutdown
SET_ Current Range
SETM-to-Main LED Current Ratio
(I
SETF-to-Flash LED Current Ratio
(I
M_, F_ Current Accuracy
Maximum Main LED Sink Current
Maximum Flash LED Sink Current
Current-Derating-Function Start
Temperature
Current-Derating-Function Slope
Dropout Voltage
1.5x and 2x Regulation Voltage
M_, F_ Leakage in Shutdown
LDO_
Output Voltage Accuracy
Output Current Range
Current Limit
Soft-Start Current Limit
A
IN
M_
F_
= -40°C to +85°C, unless otherwise noted. Typical values are at T
/I
= 3.6V, V
/I
1x/1.5x/2x White LED Charge Pumps with Two
SETF
SETM
)
PARAMETER
)
GND
= V
_______________________________________________________________________________________
PGND
= 0V, ENM1 = ENM2 = ENF = IN, R
V
1x mode (V
1.5x mode (1.5V
2x mode (2V
V
ENM_ = ENF = GND
T
ENM_ = ENF = GND
100% setting, M1–M6
100% setting, F1 and F2
T
T
R
R
T
(Note 2)
ENM_ = ENF = GND
I
V
LDO_
A
A
A
A
IN
OUT
SETM
SETF
LDO_
= +25°C
= +25°C
= -40°C to current derating start temperature
= +40°C to +85°C
≥ 3.15V, V
< 1.25V
= 150mA, relative to V
= 4.12kΩ, I
= 0V
= 4.6kΩ, for each M_
IN
IN
- V
OUT
- V
IN
OUT
F1
OUT
= 3.9V
- V
+ I
) / I
OUT
CONDITIONS
) / I
LDOs in 4mm x 4mm TQFN
F2
OUT
OUT
) / I
OUT(NOM)
OUT
SETM
A
= +25°C.) (Note 1)
T
T
T
T
A
A
A
A
= R
= +25°C
= +85°C
= +25°C
= +85°C
(Note 3)
SETF
= 6.8kΩ, P1 = P2 = unconnected, C
-1.25
MIN
-1.7
580
280
90
10
-4
0
1380
0.01
0.01
TYP
100
150
500
230
400
+40
-1.7
150
475
160
0.3
1.1
1.5
0.6
0.1
0.1
30
40
1
5
0
+1.25
MAX
+1.7
4.14
110
145
200
750
1.0
4.0
+4
90
1
2
REF
= 0.01µF,
UNITS
%/°C
MHz
A/A
A/A
mV
mV
mA
mA
mA
mA
mV
mV
mA
mA
mA
kΩ
µA
µA
°C
µA
%
%
Ω
V
3