LTC3567 Datasheet, PDF (6/28 Pages) Linear Technology – High Effi ciency USB Power Manager Plus 1A Buck-Boost Converter with I2C Control

LTC3567
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3567E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: The LTC3567 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperatures will exceed 125°C when overtemperature protection is
active. Continuous operation above the specified maximum operating
junction temperature may impair device reliability.
Note 4: Total Input current is the sum of quiescent current, I_VBUSQ, and
measured current given by:
V_{CLPROG/RCLPROG} • (h_CLPROG + 1)
Note 5: h_C/10 is expressed as a fraction of measured full charge current
with indicated PROG resistor.
Note 6: Guaranteed by design.
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C unless otherwise noted.
Ideal Diode V-I Characteristics
1.0
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
0.8
EXTERNAL VISHAY
Si2333 PMOS
0.6
INTERNAL IDEAL
DIODE ONLY
0.4
0.2
0
0
V_BUS = 0V
V_BUS = 5V
0.04 0.08 0.12 0.16 0.20
FORWARD VOLTAGE (V)
3567 G01
USB Limited Battery Charge
Current vs Battery Voltage
700
600
500
V_BUS = 5V
R_PROG = 1k
R_CLPROG = 2.94k
400
300
200
100
5x USB SETTING,
0 ^{BATTERY CHARGER SET FOR 1A}
2.7 3.0 3.3 3.6 3.9 4.2
BATTERY VOLTAGE (V)
3567 G04
Ideal Diode Resistance
vs Battery Voltage
0.25
0.20
INTERNAL IDEAL
DIODE
0.15
0.10
0.05
0
2.7
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
EXTERNAL VISHAY
Si2333 PMOS
3.0 3.3 3.6 3.9 4.2
BATTERY VOLTAGE (V)
3567 G02
USB Limited Battery Charge
Current vs Battery Voltage
150
125
100
V_BUS = 5V
R_PROG = 1k
R_CLPROG = 2.94k
75
50
25
1x USB SETTING,
BATTERY CHARGER SET FOR 1A
0
2.7 3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
3567 G05
6
Output Voltage vs Output Current
(Battery Charger Disabled)
4.50
BAT = 4V
V_BUS = 5V
5x MODE
4.25
4.00
BAT = 3.4V
3.75
3.50
3.25
0
200 400 600 800
OUTPUT CURRENT (mA)
1000
3567 G03
Battery Drain Current
vs Battery Voltage
25
I_VOUT = 0μA
V_BUS = 0V
20
15
10
V_BUS = 5V
5
(SUSPEND MODE)
0
2.7 3.0 3.3 3.6 3.9 4.2
BATTERY VOLTAGE (V)
3567 G06
3567f