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LTC3558EUD#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
LTC3558
4
3558f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Logic (HPWR, SUSP, CHRG, EN1, EN2, MODE)
V
IL
Input Low Voltage HPWR, SUSP, MODE, EN1, EN2 Pins 0.4 V
V
IH
Input High Voltage HPWR, SUSP, MODE, EN1, EN2 Pins 1.2 V
R
DN
Logic Pin Pull-Down Resistance HPWR, SUSP Pins
l
1.9 4 6.3
MΩ
V
CHRG
CHRG Pin Output Low Voltage I
CHRG
= 5mA 100 250 mV
I
CHRG
CHRG Pin Input Current BAT = 4.5V, V
CHRG
= 5V 0 1 µA
Buck Switching Regulator
PV
IN1
Input Supply Voltage
l
2.7 4.2 V
I
PVIN1
Pulse Skip Input Current
Burst Mode Current
Shutdown Current
Supply Current in UVLO
FB1 = 0.85V, MODE = 0 (Note 6)
FB1 = 0.85V, MODE = 1 (Note 6)
EN1 = 0
PV
IN1
= PV
IN2
= 2V
l
220
35
0
4
400
50
2
8
µA
µA
µA
µA
PV
IN1
UVLO PV
IN1
Falling
PV
IN1
Rising
l
l
2.30 2.45
2.55 2.70
V
V
f
OSC
Switching Frequency MODE = 0 1.91 2.25 2.59 MHz
I
LIMSW1
Peak PMOS Current Limit 550 800 1050 mA
V
FB1
Feedback Voltage MODE = 0
l
780 800 820 mV
I
FB1
FB Input Current FB1 = 0.85V –50 50 nA
D
MAX1
Maximum Duty Cycle FB1 = 0V
l
100 %
R
PMOS1
R
DS(ON)
of PMOS I
SW1
= 100mA 0.65
Ω
R
NMOS1
R
DS(ON)
of NMOS I
SW1
= –100mA 0.75
Ω
R
SW1(PD)
SW Pull-Down in Shutdown 13
kΩ
Buck-Boost Switching Regulator
PV
IN2
Input Supply Voltage
l
2.7 4.2 V
I
PVIN2
PWM Input Current
Burst Mode Input Current
Shutdown Current
Supply Current in UVLO
MODE = 0, I
OUT
= 0A, FB2 = 0.85V (Note 6)
MODE = 1, I
OUT
= 0A, FB2 = 0.85V (Note 6)
EN2 = 0, I
OUT
= 0A
PV
IN1
= PV
IN2
= 2V
220
20
0
4
400
30
1
8
µA
µA
µA
µA
PV
IN2
UVLO PV
IN2
Falling
PV
IN2
Rising
l
l
2.30 2.45
2.55 2.70
V
V
V
OUT2(LOW)
Minimum Regulated Buck-Boost V
OUT
2.65 2.75 V
V
OUT2(HIGH)
Maximum Regulated Buck-Boost V
OUT
5.45 5.60 V
I
LIMF2
Forward Current Limit (Switch A) MODE = 0
l
580 700 820 mA
I
PEAK2(BURST)
Forward Current Limit (Switch A) MODE = 1
l
180 250 320 mA
I
LIMR2
Reverse Current Limit (Switch D) MODE = 0
l
325 450 575 mA
I
ZERO2(BURST)
Reverse Current Limit (Switch D) MODE = 1
l
–35 0 35 mA
I
MAX2(BURST)
Maximum Deliverable Output Current
in Burst Mode Operation
2.7V < PV
IN2
< 4.2V
2.75V < V
OUT2
< 5.5V
50 mA
V
FB2
Feedback Servo Voltage
l
780 800 820 mV
I
FB2
FB2 Input Current FB2 = 0.85V –50 50 nA
f
OSC
Switching Frequency MODE = 0 1.91 2.25 2.59 MHz
ELECTRICAL CHARACTERISTICS
The l denotes specifi cations that apply over the full operating temperature
range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 5V, BAT = PV
IN1
= PV
IN2
= 3.6V, R
PROG
= 1.74k, unless otherwise noted.
LTC3558
5
3558f
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: T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
T
J
= T
A
+ (P
D
• θ
JA
)
Note 3: The LTC3558E is guaranteed to meet specifi cations from 0°C to
85°C. Specifi cations over the –40°C to 85°C operating temperature range
are assured by design, characterization and correlation with statistical
process controls.
Note 4: V
CC
supply current does not include current through the PROG pin
or any current delivered to the BAT pin. Total input current is equal to this
specifi cation plus 1.00125 • I
BAT
where I
BAT
is the charge current.
Note 5: I
C/10
is expressed as a fraction of measured full charge current
with indicated PROG resistor.
Note 6: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
R
DSP(ON)
PMOS R
DS(ON)
V
OUT
= 3.6V 0.6
Ω
R
DSN(ON)
NMOS R
DS(ON)
0.6
Ω
I
LEAK(P)
PMOS Switch Leakage Switches A, D –1 1 µA
I
LEAK(N)
NMOS Switch Leakage Switches B, C –1 1 µA
DC
BUCK(MAX)
Maximum Buck Duty Cycle MODE = 0
l
100 %
DC
BOOST(MAX)
Maximum Boost Duty Cycle MODE = 0 75 %
t
SS2
Soft-Start Time 0.5 ms
R
OUT(PD)
V
OUT
Pull-Down in Shutdown 10
kΩ
ELECTRICAL CHARACTERISTICS
The l denotes specifi cations that apply over the full operating temperature
range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 5V, BAT = PV
IN1
= PV
IN2
= 3.6V, R
PROG
= 1.74k, unless otherwise noted.
LTC3558
6
3558f
PROG Voltage
vs Battery Charge Current
TEMPERATURE (°C)
–55
3.9
4.0
4.2
545
3558 G07
3.8
3.7
–35 –15
25 65 85
3.6
3.5
4.1
V
CC
(V)
BAT = 3.5V
RISING
FALLING
Battery Drain Current in Undervoltage
Lockout vs Temperature
TEMPERATURE (°C)
–55
I
BAT
(µA)
2.0
2.5
3.0
545
3558 G08
1.5
1.0
–35 –15
25 65 85
0.5
0
BAT = 4.2V
EN1 = EN2 = 0V
BAT = 3.6V
I
BAT
(mA)
0
V
PROG
(V)
0.4
0.8
1.2
0.2
0.6
1.0
100 200 300 400
3558 G09
500500 150 250 350 450
V
CC
= 5V
HPWR = 5V
R
PROG
= 1.74k
EN1 = EN2 = 0V
Battery Charger Undervoltage
Lockout Threshold vs Temperature
TEMPERATURE (°C)
–55
0
CURRENT (µA)
1
3
4
5
10
7
–15
25
45
3558 G01
2
8
9
I
VCC
6
–35
5
65
85
V
CC
= 5V
BAT = 4.2V
SUSP = 5V
EN1 = EN2 = 0V
I
BAT
TYPICAL PERFORMANCE CHARACTERISTICS
TEMPERATURE (°C)
–55
V
FLOAT
(V)
4.23
5
3558 G02
4.20
4.18
–35 –15 25
4.17
4.16
4.24
4.22
4.21
4.19
45 65 85
V
CC
= 5V
I
BAT
(mA)
100
V
BAT
(V)
4.180
4.190
4.205
4.200
900
3558 G03
4.170
4.160
4.175
4.185
4.195
4.165
4.155
4.150
300
500
700
2000
400
600
800
1000
V
CC
= 5V
HPWR = 5V
R
PROG
= 845
EN1 = EN2 = 0V
V
CC
(V)
4.3
440
I
BAT
(mA)
450
460
470
480
500
4.5
4.6 4.9 5.1
3558 G04
5.34.4
4.7
4.8 5.0 5.2 5.4 5.5
490
445
455
465
475
495
485
V
CC
= 5V
HPWR = 5V
R
PROG
= 1.74k
EN1 = EN2 = 0V
V
BAT
(V)
2
I
BAT
(mA)
300
400
500
4
3558 G05
200
100
250
350
450
150
50
0
2.5
3
3.5
4.5
V
CC
= 5V
R
PROG
= 1.74k
HPWR = 5V
HPWR = 0V
TEMPERATURE (°C)
–55
0
I
BAT
(mA)
50
150
200
250
500
350
–15
25
45 125
3558 G06
100
400
450
300
–35 5
65
85
105
V
CC
= 5V
HPWR = 5V
R
PROG
= 1.74k
EN1 = EN2 = 0
Suspend State Supply and BAT
Currents vs Temperature
Battery Regulation (Float)
Voltage vs Temperature
Battery Regulation (Float) Voltage
vs Battery Charge Current,
Constant-Voltage Charging
Battery Charge Current
vs Supply Voltage
Battery Charge Current
vs Battery Voltage
Battery Charge Current vs Ambient
Temperature in Thermal Regulation
T
A
= 25°C, unless otherwise noted.
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LTC3558EUD#PBF

Mfr. #:
Buy LTC3558EUD#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Lin USB Bat Chr w/ Buck & Buck-Boost Reg
Lifecycle:
New from this manufacturer.
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