ltc3240-3.3 Linear Technology Corporation, ltc3240-3.3 Datasheet - Page 2

• Manufacturer Part Number: ltc3240-3.3
• Description: 3.3v/2.5v Step-up/ Step-down Charge Pump Dc/dc Converter
• Manufacturer: Linear Technology Corporation

ABSOLUTE AXI U RATI GS
LTC3240-3.3/LTC3240-2.5
(Note 1)
V
V
⎯ S ⎯ H ⎯ D ⎯ N to GND ................................ –0.3V to (V
V
Operating Temperature Range (Note 2) ...–40°C to 85°C
Storage Temperature Range ...................–65°C to 125°C
Maximum Junction Temperature .......................... 125°C
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
V
V
I
I
η
V
V
I
I
I
t
Step-Up Mode
I
V
f
V
Burst Mode is a registered trademark of Linear Technology Corporation.
2
IN
⎯ S ⎯ H ⎯ D ⎯ N
IH
IL
LIM
ON
BURST
OSC
IN
OUT
IH
IL
RIPPLE
RIPPLE(BURST)
IN
OUT
OUT
to GND ................................................... –0.3V to 6V
to GND ............................................. –0.3V to 5.5V
Short-Circuit Duration ............................. Indefi nite
PARAMETER
Input Voltage Range
Output Voltage Range
No Load Input Current
Shutdown Current
Effi ciency
⎯ S ⎯ H ⎯ D ⎯ N Input High Voltage
⎯ S ⎯ H ⎯ D ⎯ N Input Low Voltage
⎯ S ⎯ H ⎯ D ⎯ N Input Current
⎯ S ⎯ H ⎯ D ⎯ N Input Current
Output Current Limit
V
Burst Mode Threshold
Output Ripple
Switching Frequency
Burst Mode
OUT
W
LTC3240-3.3
LTC3240-2.5
LTC3240-3.3
LTC3240-2.5
Turn-On Time
®
Output Ripple
W W
CONDITIONS
1.8V ≤ V
2.5V ≤ V
1.8V ≤ V
I
⎯ S ⎯ H ⎯ D ⎯ N = 0V, V
V
V
V
V
1.8V ≤ V
1.8V ≤ V
V
V
V
V
From the Rising Edge of ⎯ S ⎯ H ⎯ D ⎯ N to 90% of V
V
V
V
I
V
V
OUT
OUT
U
IN
IN
IN
IN
⎯ S ⎯ H ⎯ D ⎯ N
⎯ S ⎯ H ⎯ D ⎯ N
IN
IN
IN
IN
IN
IN
IN
A
= 2.5V, I
= 3.7V, I
= 2V, I
= 3V, I
= 3.7V, V
= 2.4V, V
= 2.5V, R
= 3.7V, R
= 2.4V
= 2.4V
= 2.4V
IN
= 25°C, ⎯ S ⎯ H ⎯ D ⎯ N = V
= 0, 1.8V ≤ V
= 100mA, V
= V
= 0V
+ 0.3V)
IN
IN
IN
IN
IN
The
OUT
OUT
IN
≤ 2.5V, I
≤ 5.5V, I
≤ 5.5V, I
≤ 5.5V
≤ 5.5V
OUT
OUT
= 5.5V
OUT
OUT
LOAD
LOAD
OUT
= 50mA
= 50mA
●
= 100mA
= 100mA
OUT
= 0V Step-Down Mode
= 0V Step-Up Mode
denotes the specifi cations which apply over the full operating
IN
= 0V
= 66Ω
= 66Ω
OUT
OUT
OUT
≤ 5.5V
= 2.5V or 3.3V
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
< 40mA
< 150mA
< 60mA
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
IN
ORDER PART NUMBER
, C
LTC3240EDC-3.3
LTC3240EDC-2.5
FLY
= 1µF, C
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
IN
OUT
T
6-LEAD (2mm × 2mm) PLASTIC DFN
JMAX
V
GND
= 1µF, C
OUT
V
http://www.linear.com/leadfree/
IN
= 125°C, θ
1
2
3
●
●
●
●
●
●
●
●
●
DC PACKAGE
TOP VIEW
OUT
JA
3.168
3.168
MIN
7
1.8
2.4
1.2
0.6
–1
–1
= 80°C/W (NOTE 4)
= 4.7µF unless otherwise noted.
U
DC PART MARKING
6
4
5
TYP
450
270
SHDN
C
C
3.3
3.3
2.5
0.1
0.5
0.4
1.2
65
64
87
63
83
15
20
20
–
+
LCBP
LBXJ
W
3.432
3.432
MAX
100
5.5
2.6
0.4
1.8
1
1
1
UNITS
mV
mV
3240fb
U
MHz
mA
mA
mA
ms
ms
P-P
P-P
µA
µA
µA
µA
%
%
%
%
V
V
V
V
V
V