LTC3559-1_15 Datasheet, PDF (2/24 Pages) Linear Technology – Linear USB Battery Charger with Dual Buck Regulators

LTC3559/LTC3559-1
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V_CC (Transient);
t < 1ms and Duty Cycle < 1%....................... –0.3V to 7V
V_CC (Static) .................................................. –0.3V to 6V
BAT, CHRG, SUSP ........................................ –0.3V to 6V
HPWR, NTC, PROG ....... –0.3V to Max (V_CC, BAT) + 0.3V
PROG Pin Current ...............................................1.25mA
BAT Pin Current ..........................................................1A
PV_IN ................................................ –0.3V to BAT + 0.3V
EN1, EN2, MODE.......................................... –0.3V to 6V
FB1, FB2, SW1, SW2 ............–0.3V to PV_IN + 0.3V or 6V
I_SW1, I_SW2 ...................................................... 600mA DC
Junction Temperature (Note 2) ............................. 125°C
Operating Temperature Range (Note 3).... –40°C to 85°C
Storage Temperature.............................. –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
16 15 14 13
GND 1
12 HPWR
BAT 2
11 SUSP
17
MODE 3
10 FB2
FB1 4
9 EN2
5678
UD PACKAGE
16-LEAD (3mm s 3mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 68°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3559EUD#PBF
LTC3559EUD#TRPBF
LCMB
16-Lead (3mm × 3mm) Plastic QFN
LTC3559EUD-1#PBF
LTC3559EUD-1#TRPBF LDQD
16-Lead (3mm × 3mm) Plastic QFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
ELECTRICAL CHARACTERISTICS The l denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T_A = 25°C.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Battery Charger. V_CC = 5V, BAT = PV_IN = 3.6V, R_PROG = 1.74k, HPWR = 5V, SUSP = NTC = EN1 = EN2 = 0V
V_CC
Input Supply Voltage
l 4.3
5.5
V
I_VCC
Battery Charger Quiescent Current (Note 4) Standby Mode, Charge Terminated
Suspend Mode, V_SUSP = 5V
200 400
μA
8.5
17
μA
V_FLOAT
BAT Regulated Output Voltage
LTC3559
0°C ≤ T_A ≤ 85°C, LTC3559
4.179 4.200 4.221
V
4.165 4.200 4.235
V
LTC3559-1
0°C ≤ T_A ≤ 85°C, LTC3559-1
4.079 4.100 4.121
V
4.065 4.100 4.135
V
I_CHG
Constant-Current Mode Charge Current HPWR = 5V
HPWR = 0V
l 440 460 500
mA
84
92 100
mA
I_BAT
Battery Drain Current
V_UVLO
ΔV_UVLO
V_DUVLO
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
Differential Undervoltage Lockout
Threshold
Standby Mode, Charger Terminated
Shutdown, V_CC < V_UVLO, BAT = V_FLOAT
Suspend Mode, SUSP = 5V, BAT = V_FLOAT
BAT = 3.5V, V_CC Rising
BAT = 3.5V
BAT = 4.05V, (V_CC – BAT) Falling (LTC3559)
BAT = 3.95V, (V_CC – BAT) Falling (LTC3559-1)
–3.5 –7
μA
–2.5 –4
μA
–1.5 –3
μA
3.85 4.0 4.125
V
200
mV
30
50
70
mV
30
50
70
mV
3559fb
2