LTC3552-1 Linear Technology, LTC3552-1 Datasheet - Page 2

• Manufacturer Part Number: LTC3552-1
• Description: Standalone Linear Li-Ion Battery Charger and Dual Synchronous Buck Converter
• Manufacturer: Linear Technology

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ABSOLUTE AXI U RATI GS
LTC3552-1
(Note 1)
Input Supply Voltage (V
PROG, ITERM .................................. –0.3V to V
BAT .............................................................. –0.3V to 7V
⎯ C ⎯ H ⎯ R ⎯ G , ⎯ P ⎯ W ⎯ R , ⎯ E ⎯ N ......................................... –0.3V to 10V
BAT Short-Circuit Duration ............................Continuous
BAT Pin Current ..........................................................1A
PROG Pin Current ....................................................1mA
V
V
V
SW1, SW2 Voltage ...........................–0.3V to V
Ambient Operating Temperature
Maximum Junction Temperature (Note 8) ............ 125°C
Storage Temperature Range ................... –65°C to 125°C
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
Battery Charger
V
I
V
I
V
V
V
V
R
V
I
2
IN
BAT
TERM
ASD
IN
FLOAT
UV
UVHYS
⎯ E ⎯ N (IL)
⎯ E ⎯ N (IH)
⎯ E ⎯ N
CC
OUT1
FB1
RUN2 Voltages .............................–0.3V to V
Range (Note 2) .................................... –40°C to 85°C
Supply Voltage ...................................... –0.3V to 6V
, V
, V
FB2
OUT2
........................................–0.3V to V
, RUN1,
PARAMETER
Input Supply Voltage
Input Supply Current
Regulated Output (Float) Voltage
BAT Pin Current
V
V
⎯ E ⎯ N Pin Input Low Voltage
⎯ E ⎯ N Pin Input High Voltage
⎯ E N Pin Pull-Down Resistor
V
Charge Termination Current Threshold
IN
IN
IN
W
Charge Mode (Note 4)
Standby Mode
Shutdown Mode
Undervoltage Lockout Voltage
Undervoltage Lockout Hysteresis
– V
BAT
IN
Lockout Threshold Voltage
) ......................... –0.3V to 10V
W W
U
A
= 25°C. V
CC
CC
IN
CC
CONDITIONS
R
Charge Terminated
⎯ E ⎯ N = 5V, V
0°C ≤ T
R
R
Standby Mode, V
Shutdown Mode ( ⎯ E ⎯ N = 5V, V
V
Sleep Mode, V
From V
V
V
R
R
PROG
PROG
PROG
IN
IN
IN
TERM
TERM
+ 0.3V
+ 0.3V
+ 0.3V
+0.3V
The
< V
from Low to High
from High to Low
= 10k
= 10k, Current Mode
= 2k, Current Mode
= 1k
= 5k
UV
IN
A
●
IN
≤ 85°C, 4.3V < V
)
Low to High
IN
denotes the specifi cations which apply over the full operating
= 5V, V
< V
IN
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
BAT
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
= 0V
BAT
ORDER PART NUMBER
CC
or V
= 4.2V
= 3.6V unless otherwise noted.
LTC3552EDHC-1
IN
IN
< V
EXPOSED PAD IS GROUND (PIN 17) MUST BE SOLDERED TO PCB
< 8V
IN
UV
< V
BAT
ITERM
CHRG
V
RUN2
RUN1
16-LEAD (5mm × 3mm) PLASTIC DFN
or
T
SW2
OUT2
V
BAT
JMAX
FB2
http://www.linear.com/leadfree/
= 125°C, θ
1
2
3
4
5
6
7
8
●
●
●
●
●
●
●
●
●
●
●
●
●
●
DHC PACKAGE
TOP VIEW
4.158
JA
MIN
4.25
17.5
17
465
150
3.7
0.4
1.2
92
70
90
= 40°C/W (Note 3)
5
U
DHC PART MARKING
16
15
14
13
12
11
10
9
–2.5
TYP
200
100
500
200
100
100
0.4
4.2
3.8
0.7
0.7
25
±1
±1
30
20
EN
PWR
V
PROG
SW1
V
V
V
2
IN
CC
OUT1
FB1
35521
W
4.242
MAX
3.92
22.5
500
105
535
300
140
110
50
–6
±2
±2
50
8
1
1
5
UNITS
35521f
U
mΩ
mA
mA
mA
mV
mV
mV
mA
mA
µA
µA
µA
µA
µA
µA
V
V
V
V