Datasheet

LTC4099
6
4099fd
OUTPUT CURRENT (A)
0.01
40
EFFICIENCY (%)
50
60
70
80
100
0.1 1
4099 G05
90
500mA TO 1.2A
V
BUS
INPUT LIMIT MODES
100mA V
BUS
INPUT
LIMIT MODE
V
CLPROG
= 0V
Battery and V
BUS
Currents
vs Output Current
Battery Charging Efficiency
vs Battery Voltage with No
External Load (P
BAT
/P
VBUS
)
T
A
= 25°C, V
BUS
= 5V, BAT = 3.8V, R
PROG
= 1.02k,
R
CLPROG
= 3.01k, unless otherwise noted.
BATTERY VOLTAGE (V)
2.7
50
EFFICIENCY (%)
70
90
3.0 3.3 3.93.6
60
80
100
4.2
4099 G06
500mA USB SETTING
100mA USB SETTING
Battery and V
BUS
Currents
vs Output Current Output Voltage vs Output Current
PowerPath Switching Regulator
Efficiency vs Output Current
Typical perForMance characTerisTics
OUTPUT CURRENT (mA)
0
CURRENT (mA)
400
600
800
4099 G01
200
0
–600
–200
–400
200
400
600
1000
BATTERY
CURRENT
(CHARGING)
BATTERY
CURRENT
(DISCHARGING)
V
BUS
INPUT LIMIT SET
FOR USB 500mA
BATTERY CHARGER SET
FOR 800mA
V
BUS
CURRENT
OUTPUT CURRENT (mA)
0
CURRENT (mA)
400
600
800
800
4099 G02
200
0
–200
200
400
600
1000
BATTERY
CURRENT
(CHARGING)
BATTERY
CURRENT
(DISCHARGING)
V
BUS
INPUT LIMIT SET
FOR 790mA
BATTERY CHARGER SET
FOR 500mA
V
BUS
CURRENT
OUTPUT CURRENT (mA)
0
OUTPUT VOLTAGE (V)
4.0
4.5
5.0
800
4099 G03
3.5
3.0
200
400
600
1000
V
BUS
INPUT LIMIT SET
FOR USB 500mA
BATTERY CHARGER DISABLED
BAT = 4V
BAT = 3.4V
BATTERY VOLTAGE (V)
2.7
0
BATTERY CURRENT (µA)
10
20
3.0 3.3 3.93.6
5
15
25
4.2
4099 G04
I
VOUT
= 0µA
V
BUS
= 0V
V
BUS
= 5V
(SUSPEND MODES)
Battery Drain Current
vs Battery Voltage
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
LTC4099 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
LTC4099 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 4: T
otal input current is the sum of quiescent current, I
VBUSQ
, and
measured current given by:
V
CLPROG
/R
CLPROG
• (h
CLPROG
+ 1)
Note 5: The
PROG pin always represents actual charge current. See the
Full Capacity Charge Indication (C/x) section.
elecTrical characTerisTics