MAX8819BETI+T Maxim Integrated Products, MAX8819BETI+T Datasheet - Page 15

• Manufacturer Part Number: MAX8819BETI+T
• Description: IC PMIC W/INT CHARGER 28-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8819BETI+T

• Applications: Handheld/Mobile Devices
• Voltage - Supply: 2.6 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The MAX8819_ is a complete power solution that
includes a battery charger, step-down converters, and
WLED power. As shown in Figure 1, the IC integrates a
DC power input, Li+/Li-Poly battery charger, three step-
down converters, and one step-up converter for powering
Figure 1. Functional Diagram/Typical Applications Circuit
OUT4
SYS
0.1μF
C2
0.1μF
50V
X7R
C3
DLIM1 DLIM2
UP TO 6
0
0
1
1
PG4
WLED
10μH
L4
PG4
AC-TO-DC
ADAPTER
(25mA)
ON
0
1
0
1
PMIC with Integrated Chargers and Smart
R1
20
D7
DC I
ON
SUSPEND
______________________________________________________________________________________
1000
D3
D4
D5
D6
LIM
D1
D2
475
95
OFF
4.7μF
0.022μF
(mA)
C1
Power Selector in a 4mm x 4mm TQFN
Detailed Description
C4
PG4
OFF
COMP4
DLIM1
DLIM2
EN123
OVP4
FB4
PG4
EN4
LX4
DC
DIMMING
STEP-UP
PULSE
DC-DC
MAX8819A
MAX8819B
MAX8819C
REG4
GLITCH FILTER
SELECTOR
SMART
POWER
GND
BIAS
PV13
PV13
EP
PWM
EN
EN
EN
PWM
PWM
50us BLANKING
CHARGER AND
SYSTEM LOAD
87% FALLING
REG1/RESET
80ms DELAY
STEP-DOWN
92% RISING
STEP-DOWN
Li+/Li-Poly
STEP-DOWN
BATTERY
SWITCH
DC-DC
DC-DC
DC-DC
REG2
REG1
REG3
white LEDs. All three step-down converters feature
adjustable output voltages set with external resistors.
The MAX8819_ has one external power input that con-
nects to either an AC-to-DC adapter or USB port. Logic
inputs DLIM1 and DLIM2 select the desired input cur-
rent limit.
CHG
SYS
BAT
CEN
CISET
PV13
PG1
RST1
PV2
PG2
FB3
PG3
LX1
FB1
LX2
FB2
LX3
PG1
*22μF FOR MAX8819C IS RECOMMENDED.
PG1
PG2
C7
4.7μF
C9
2.2μF
PG2
PG3
C6
4.7μF
R2
C5
10μF
4.7μH
100kΩ
200kΩ
L1
R8
R9
80.6kΩ
4.7μH
4.7μH
20.0kΩ
100kΩ
100kΩ
R15
R12
R13
R14
L2
L3
+
SYS
Li+/LiPo
BATTERY
SYS
SYS
CAPACITY
PG3
R6
470kΩ
BATTERY
PG1
R10
470kΩ
PG2
C8*
10μF
OUT1
C11*
10μF
C10*
10μF
(mAh)
400
800
300
600
900
300mA
400mA
1.8V
200mA
OUT3
CHG
OUT2
1.2V
OUT1
RST1
DESIRED
3.0V
OUT1
CHARGE
RATE (C)
0.7
0.7
0.7
0.7
0.7
ON
R7 (kΩ)
14.3
10.7
7.15
5.36
4.75
OFF
CURRENT
CHARGE
FAST-
(mA)
210
280
420
560
632
15