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MAX8821 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - White LED Charge Pump - Maxim Integrated Products

भाग संख्या MAX8821
समारोह White LED Charge Pump
मैन्युफैक्चरर्स Maxim Integrated Products 
लोगो Maxim Integrated Products लोगो 
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<?=MAX8821?> डेटा पत्रक पीडीएफ

MAX8821 pdf
White LED Charge Pump with Mono Class D
Audio Amp and Dual LDO
www.daAtasBheSeOt4uL.cUomTE MAXIMUM RATINGS
IN1, IN2, IN3, VDD to AGND..................................-0.3V to +6.0V
SCL, SDA to AGND ....................................-0.3V to (VDD + 0.3V)
IN1, IN2, IN3 to NEG .............................................-0.3V to +6.0V
AGND to C2N ........................................................-0.3V to +6.0V
C1P, C2P to AGND ....................................-0.3V to (VIN1 + 0.3V)
LED_, C1N, C2N to NEG............................-0.3V to (VIN1 + 0.3V)
LDO1, LDO2, REF to AGND ......................-0.3V to (VIN3 + 0.3V)
CMREF, AIN+, AIN-, SPK+, SPK-
to AGND..................................................-0.3V to (VIN2 + 0.3V)
IN1, IN2 to IN3.......................................................-0.3V to +0.3V
PGND1, PGND2 to AGND.....................................-0.3V to +0.3V
SPK+, SPK- Short Circuit to PGND2 or IN2 ...............Continuous
Continuous Power Dissipation (TA = +70°C)
28-Pin, Thin QFN 4mm x 4mm
(derate 28.6mW/°C above +70°C) ..............................2286mW
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
(VIN1 = VIN2 = VIN3 = VDD = 3.6V, VAGND = VPGND1 = VPGND2 = 0V, circuit of Figure 2, TA = -40°C to +85°C, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN1, VIN2, VIN3 Operating
Voltage
2.7 5.5 V
VDD Operating Range
1.5 5.5 V
Undervoltage Lockout (UVLO)
Threshold
VIN3 rising
2.25 2.45 2.65
V
UVLO Hysteresis
VDD Shutdown Threshold
IN1, IN2, IN3 Shutdown Supply
Current
(All Outputs Off)
VDD = AGND
VDD = 3.6V
TA = +25°C
TA = +85°C
TA = +25°C
TA = +85°C
0.450
100
0.865
0.1
0.1
2
2
1.350
1
10
mV
V
µA
Charge pump inactive, 2 LEDs at 0.1mA setting, audio
amplifier disabled, LDO1 and LDO2 disabled
LED driver disabled, audio amplifier disabled, and LDO1
and LDO2 enabled
70 120
170 250
µA
No-Load Supply Current
Charge pump active, 1MHz switching, all LEDs at
25.6mA setting, audio amplifier disabled, LDO1 and
LDO2 disabled
1.50 4.00
mA
LED driver disabled, audio amplifier enabled, LDO1 and
LDO2 disabled
6.6 20
Thermal Shutdown
Thermal-Shutdown Hysteresis
+160
20
°C
°C
CHARGE PUMP
SYNC = 0
1000
Switching Frequency
(fSW)
SYNC = 1, SW_MODE = 00
SYNC = 1, SW_MODE = 01
SYNC = 1, SW_MODE = 10
450 550 650
575 700 825
625
± 25
kHz
2 _______________________________________________________________________________________

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