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LTC3240-3.3 数据表(PDF) 2 Page - Linear Technology

部件名 LTC3240-3.3
功能描述  3.3V/2.5V Step-Up/ Step-Down Charge Pump DC/DC Converter
Download  12 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3240-3.3 数据表(HTML) 2 Page - Linear Technology

  LTC3240-3.3 Datasheet HTML 1Page - Linear Technology LTC3240-3.3 Datasheet HTML 2Page - Linear Technology LTC3240-3.3 Datasheet HTML 3Page - Linear Technology LTC3240-3.3 Datasheet HTML 4Page - Linear Technology LTC3240-3.3 Datasheet HTML 5Page - Linear Technology LTC3240-3.3 Datasheet HTML 6Page - Linear Technology LTC3240-3.3 Datasheet HTML 7Page - Linear Technology LTC3240-3.3 Datasheet HTML 8Page - Linear Technology LTC3240-3.3 Datasheet HTML 9Page - Linear Technology Next Button
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LTC3240-3.3/LTC3240-2.5
2
3240fb
VIN to GND ...................................................–0.3V to 6V
VOUT to GND .............................................–0.3V to 5.5V
⎯S⎯H⎯D⎯N to GND................................ –0.3V to (V
IN + 0.3V)
VOUT Short-Circuit Duration ............................. Indefinite
Operating Temperature Range (Note 2) ...– 40°C to 85°C
Storage Temperature Range...................– 65°C to 125°C
Maximum Junction Temperature .......................... 125°C
ORDER PART NUMBER
TJMAX = 125°C, θJA = 80°C/W (NOTE 4)
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
LTC3240EDC-3.3
LTC3240EDC-2.5
(Note 1)
The
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, ⎯S⎯H⎯D⎯N = VIN, CFLY = 1µF, CIN = 1µF, COUT = 4.7µF unless otherwise noted.
ELECTRICAL CHARACTERISTICS
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
DC PACKAGE
6-LEAD (2mm
× 2mm) PLASTIC DFN
4
5
7
6
3
2
1
GND
VIN
VOUT
SHDN
C
C +
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Input Voltage Range
1.8
5.5
V
VOUT
Output Voltage Range
1.8V ≤ VIN ≤ 2.5V, IOUT < 40mA
3.168
3.3
3.432
V
LTC3240-3.3
2.5V ≤ VIN ≤ 5.5V, IOUT < 150mA
3.168
3.3
3.432
V
LTC3240-2.5
1.8V ≤ VIN ≤ 5.5V, IOUT < 60mA
2.4
2.5
2.6
V
IIN
No Load Input Current
IOUT = 0, 1.8V ≤ VIN ≤ 5.5V
65
100
µA
I⎯S⎯H⎯D⎯N
Shutdown Current
⎯S⎯H⎯D⎯N = 0V, V
OUT = 0V
0.1
1
µA
η
Efficiency
VIN = 2.5V, IOUT = 100mA
64
%
LTC3240-3.3
VIN = 3.7V, IOUT = 100mA
87
%
LTC3240-2.5
VIN = 2V, IOUT = 50mA
63
%
VIN = 3V, IOUT = 50mA
83
%
VIH
⎯S⎯H⎯D⎯N Input High Voltage
1.8V ≤ VIN ≤ 5.5V
1.2
V
VIL
⎯S⎯H⎯D⎯N Input Low Voltage
1.8V ≤ VIN ≤ 5.5V
0.4
V
IIH
⎯S⎯H⎯D⎯N Input Current
V⎯S⎯H⎯D⎯N = VIN = 5.5V
– 1
1
µA
IIL
⎯S⎯H⎯D⎯N Input Current
V⎯S⎯H⎯D⎯N = 0V
– 1
1
µA
ILIM
Output Current Limit
VIN = 3.7V, VOUT = 0V Step-Down Mode
450
mA
VIN = 2.4V, VOUT = 0V Step-Up Mode
270
mA
tON
VOUT Turn-On Time
From the Rising Edge of
⎯S⎯H⎯D⎯N to 90% of V
OUT
VIN = 2.5V, RLOAD = 66Ω
0.5
ms
VIN = 3.7V, RLOAD = 66Ω
0.4
ms
Step-Up Mode
IBURST
Burst Mode Threshold
VIN = 2.4V
15
mA
VRIPPLE
Output Ripple
IOUT = 100mA, VOUT = 2.5V or 3.3V
20
mVP-P
fOSC
Switching Frequency
VIN = 2.4V
0.6
1.2
1.8
MHz
VRIPPLE(BURST)
Burst Mode
® Output Ripple
VIN = 2.4V
20
mVP-P
Burst Mode is a registered trademark of Linear Technology Corporation.
DC PART MARKING
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF
Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
LBXJ
LCBP
Consult LTC Marketing for parts specified with wider operating temperature ranges.


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