MAX8678ETE+T Maxim Integrated Products, MAX8678ETE+T Datasheet - Page 2

• Manufacturer Part Number: MAX8678ETE+T
• Description: IC LED DRVR WHITE BCKLGT 16-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX8678ETE+T

• Constant Current: Yes
• Topology: PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 4
• 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: 24mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Lead Free Status / Rohs Status: Details

ABSOLUTE MAXIMUM RATINGS
IN to GND ..............................................................-0.3V to +6.0V
IN to NEG ..............................................................-0.3V to +6.0V
ENLED, ENAMP, LED_, C+, A+, A-, OUT+, OUT-,
ENLED, ENAMP, LED_, C+, A+, A-, OUT+, OUT-,
GND to NEG ......................................................…-0.3V to +6.0V
GND to C-..............................................................-0.3V to +6.0V
White LED Charge Pump with
1.1W Audio Amplifier
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
2
IN Operating Voltage
Undervoltage-Lockout (UVLO) Threshold V
UVLO Hysteresis
Shutdown Supply Current
(All Outputs Off)
No-Load Supply Current
Thermal Shutdown
Thermal-Shutdown Hysteresis
SERIAL-PULSE INTERFACE (EN_)
Logic Input-High Voltage
Logic Input-Low Voltage
Logic Input Current
t
t
t
t
CHARGE PUMP
Switching Frequency
Soft-Start Time
Regulation Voltage (OVP) (V
Open-Loop NEG Output Resistance
((V
Guaranteed Output Current
NEG Discharge Resistance in Shutdown
SHDN
HOLD
LO
HI
IN
BIAS to GND…….....................................-0.3V to (V
BIAS, C- to NEG ...................................…-0.3V to (V
NEG
_______________________________________________________________________________________
= 3.6V, V
-V
IN
)/I
GND
PARAMETER
NEG
)
= 0V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
IN
- V
NEG
)
ENLED = ENAMP =
GND
Charge pump inactive, LED_ = 1.6mA
ENAMP = GND, T
Charge pump active, 1MHz switching, LEDs at
24mA setting, ENAMP = GND
ENAMP = IN, ENLED = GND
V
V
V
V
V
See Figures 2 and 3
See Figures 2 and 3
See Figures 2 and 3
See Figures 2 and 3
LED V
All LEDs off, ENLED = GND
IN
IN
IN
IN
IL
IH
= 0V or
rising
= 2.7V to 4.2V
= 4.2V to 5.5V
= 2.7V to 5.5V
= 5.5V
F
= 3.9V, V
IN
IN
+ 0.3V)
+ 0.3V)
IN
A
CONDITIONS
= 3.2V
= +25°C
OUT+, OUT- Short Circuit to GND or IN ....................Continuous
Continuous Power Dissipation (T
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
T
T
T
T
A
A
A
A
16-Pin Thin QFN 3mm x 3mm
(derate 17.5mW/°C above +70°C) ............................1398mW
= +25°C
= +85°C
= +25°C
= +85°C
A
= +25°C.) (Note 1)
MIN
2.25
2.7
1.4
1.5
0.5
0.5
96
A
= +70°C)
+160
TYP
2.45
0.45
0.01
100
140
0.1
0.1
0.1
0.1
20
10
10
3
1
5
MAX
2.65
200
500
500
5.5
1.5
0.4
3.2
3.2
23
1
UNITS
MHz
mV
mA
mA
ms
ms
ms
kΩ
µA
µA
°C
°C
µA
µs
µs
Ω
V
V
V
V
V