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MAX8822 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Ultra-Efficient Negative Charge-Pump LED Driver - Maxim Integrated Products

भाग संख्या MAX8822
समारोह Ultra-Efficient Negative Charge-Pump LED Driver
मैन्युफैक्चरर्स Maxim Integrated Products 
लोगो Maxim Integrated Products लोगो 
पूर्व दर्शन
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<?=MAX8822?> डेटा पत्रक पीडीएफ

MAX8822 pdf
Ultra-Efficient Negative Charge-Pump LED
Driver with Dual LDOs in 3mm x 3mm Thin QFN
www.daAtaBshSeeOt4uL.cUomTE MAXIMUM RATINGS
IN, C1N, C2N, REF, ENLED, ENLDO, LDO1, LDO2
to GND...............................................................-0.3V to +6.0V
IN, REF, ENLED, ENLDO, LDO1, LDO2
to NEG ...............................................................-0.3V to +6.0V
LED_, C1N, C2N to NEG .............................-0.3V to (VIN + 0.3V)
C1P, C2P to GND ........................................-0.3V to (VIN + 0.3V)
NEG to GND ..........................................................-6.0V to +0.3V
NEG, LDO1, LDO2 Short-Circuit Current to GND ......Continuous
Continuous Power Dissipation (TA = +70°C)
16-Pin Thin QFN 3mm x 3mm
(derate 14.7mW/°C above +70°C) .............................1177mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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
(VIN = 3.6V, VGND = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX
IN Operating Voltage
2.7 5.5
Undervoltage Lockout (UVLO)
Threshold
VIN rising
2.25 2.45 2.65
UVLO Hysteresis
100
Shutdown Supply Current
IN Operating Supply Current
Thermal-Shutdown Threshold
ENLED = ENLDO = GND TA = +25°C
TA = +85°C
Charge pump inactive,
ILED1 = ILED2 = ILED3 = ILED4 = 0.1mA
Charge pump active, VIN = 2.7V, 1MHz switching,
ILED1 = ILED2 = ILED3 = ILED4 = 0.1mA
0.5 5
0.5
65 100
1.4
160
Thermal-Shutdown Hysteresis
SERIAL-PULSE CONTROL
Logic Input-High Voltage (VIH)
Logic Input-Low Voltage (VIL)
Logic Input Current
tSHDN
tLO
tHI
tINIT
tHOLD
CHARGE PUMP
Switching Frequency
VIN = 2.7V to 5.5V
VIN = 2.7V to 5.5V
VIL = 0V or VIH = 5.5V
TA = +25°C
TA = +85°C
See Figures 1 and 2 (Note 2)
See Figures 1 and 2
See Figures 1 and 2
First high pulse from shutdown (Figures 1 and 2)
Pulse width to latch EN_ count (Figures 1 and 2) (Note 3)
1.4
2.5
0.5
0.5
100
2.5
20
0.01
0.1
1
0.4
1
500
500
Soft-Start Time
Charge-Pump Regulation Voltage
Open-Loop NEG Output
Resistance
NEG Shutdown Discharge
Resistance
(VIN - VNEG)
(VNEG - 0.5 x VIN) / INEG
All LEDs off, EN_ = GND
0.5
5
2.8 5.0
10
UNITS
V
V
mV
µA
µA
mA
°C
°C
V
V
µA
ms
µs
µs
µs
ms
MHz
ms
V
Ω
kΩ
2 _______________________________________________________________________________________

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