MAX8821 MAXIM [Maxim Integrated Products], MAX8821 Datasheet - Page 15

• Manufacturer Part Number: MAX8821
• Description: White LED Charge Pump with Mono Class D Audio Amp and Dual LDO
• Manufacturer: MAXIM [Maxim Integrated Products]

Figure 1. Block Diagram
CMREF
PGND2
PGND1
AGND
LDO1
LDO2
SDA
AIN+
AIN-
SCL
V
REF
IN3
IN1
DD
White LED Charge Pump with Mono Class D
______________________________________________________________________________________
OSCILLATOR
+
-
REFERENCE
LDO1
LDO2
PGA
IN3
I
2
C INTERFACE AND
LOGIC CONTROL
C1P
CURRENT
CONTROL
SOURCE
C1N
CHARGE PUMP
MAX8821
INVERTING
REF
Audio Amp and Dual LDO
C2P
EP
OSCILLATOR
CLASS D
AMP
C2N
PGND2
NEG
NEG
NEG
NEG
NEG
NEG
REGULATORS
ADAPTIVE
CURRENT
OUTPUT
BUFFER
PGND2
MINIMUM
SELECT
NEG
LED3
LED6
IN2
SPK+
SPK-
LED4
LED5
LED1
LED2
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