LTC3520 Linear Technology, LTC3520 Datasheet - Page 2

• Manufacturer Part Number: LTC3520
• Description: Synchronous 1A Buck-Boost and 600mA Buck Converters
• Manufacturer: Linear Technology

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ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
LTC3520
(Note 1)
PV
SW1A, SW1B, SW2 Voltage
Voltage, All Other Pins ................................. –0.3V to 6V
Operating Temperature Range (Note 2) ...–40°C to 85°C
Maximum Junction Temperature (Note 5) ............ 125°C
Storage Temperature Range ...................–65°C to 150°C
ORDER INFORMATION
LEAD FREE FINISH
LTC3520EUF#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
temperature range, otherwise specifi cations are at T
otherwise noted.
PARAMETER
Input Voltage
Quiescent Current in Shutdown
Undervoltage Lockout
Burst Mode Quiescent Current, Both Converters
Oscillator Frequency
Buck Converter
PMOS Switch Resistance
NMOS Switch Resistance
NMOS Switch Leakage
PMOS Switch Leakage
2
DC ............................................................ –0.3V to 6V
Pulsed <100ns…………….…………. ...... –1V to 7V
IN1
, PV
IN2
, PV
IN3
, SV
TAPE AND REEL
LTC3520EUF#TRPBF
IN
Voltage ................ –0.3V to 6V
CONDITIONS
V
SV
V
R
V
V
⎯ S ⎯ D ⎯ 1
FB1
T
SW2
SW2
IN
= 54.9k
http://www.linear.com/leadfree/
= V
Rising
= V
= 5V, S
= 0V, S
PART MARKING
3520
FB2
⎯ S ⎯ D ⎯ 2
http://www.linear.com/tapeandreel/
A
= 25°C, S
= 0.88V, V
= V
VIN
VIN
⎯ S ⎯ D ⎯ 3
= P
= P
The
VIN1
VIN1
= 0V
●
⎯ S ⎯ D ⎯ 3
VIN
= P
= P
denotes the specifi cations which apply over the full operating
= 0V
= P
VIN2
VIN2
PIN CONFIGURATION
VIN1
= P
= P
= P
PACKAGE DESCRIPTION
24-Lead (4mm × 4mm) Plastic QFN
VIN3
VIN3
VIN2
= 5V
= 5V
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
= P
PWM1
A
VIN3
SV
SD1
OUT
A
R
IN
IN
T
24-LEAD (4mm × 4mm) PLASTIC QFN
= 3.6V, V
1
2
3
4
5
6
T
JMAX
24 23 22 21 20 19
7
●
●
●
= 125°C, θ
8
UF PACKAGE
TOP VIEW
OUT1
9
MIN
2.2
0.8
25
10
= 3.3V, R
JA
= 37°C/W
11 12
0.01
0.32
0.18
TYP
TEMPERATURE RANGE
–40°C to 85°C
0.1
0.1
55
2
1
T
18
17
16
15
14
13
= 54.9k, unless
FB1
SS1
SGND
V
FB2
SS2
C1
MAX
5.5
2.2
1.2
10
1
5
UNITS
MHz
3520f
µA
µA
µA
µA
Ω
Ω
V
V