LTC3221_15 Datasheet, PDF (2/12 Pages) Linear Technology – Micropower, Regulated Charge Pump

LTC3221/
LTC3221-3.3/LTC3221-5
ABSOLUTE AXI U RATI GS
(Note 1)
V_IN, ⎯S⎯H⎯D⎯N, FB............................................. – 0.3V to 6V
V_OUT to GND............................................. – 0.3V to 5.5V
V_OUT 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
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
C⁺ 1
6 V_OUT
C^– 2
7
5 V_IN
SHDN/FB* 3
4 GND
T_JMAX = 125°C, θ_JA = 80°C/W
EXPOSED PAD IS GND (PIN 7) MUST BE SOLDERED TO PCB
*^⎯S^⎯H^⎯D^⎯N ON LTC3221-3.3;LTC3221-5 FB ON LTC3221
ORDER PART NUMBER DC PART MARKING
LTC3221EDC
LTC3221EDC-3.3
LTC3221EDC-5
LCCP
LBQP
LCCN
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/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 2.5V (LTC3221-3.3/LTC3221) or 3V (LTC3221-5), ^⎯S^⎯H^⎯D^⎯N = V_IN,
C_FLY = 1µF, C_IN = 2.2µF, C_OUT = 2.2µF, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
LTC3221-3.3
V_IN
Input Supply Voltage
● 1.8
4.4
V
V_OUT
Output Voltage
1.8V ≤ V_IN ≤ 4.4V, I_OUT ≤ 25mA
2V ≤ V_IN < 4.4V, I_OUT ≤ 60mA
I_CC
Operating Supply Current
I_OUT = 0mA
● 3.168 3.3 3.432
V
●
8
15
µA
V_R
Output Ripple
V_IN = 2V, I_OUT = 60mA, C_OUT = 4.7µF (Note 3)
35
mV_P-P
η
Efficiency
V_IN = 2V, I_OUT = 60mA (Note 3)
82
%
I_SC
Output Short-Circuit Current
V_OUT = 0V
●
120
240
mA
LTC3221-5
V_IN
Input Supply Voltage
● 2.7
5.5
V
V_OUT
Output Voltage
2.7V ≤ V_IN ≤ 5.5V, I_OUT < 25mA
3V ≤ V_IN ≤ 5.5V, I_OUT < 60mA
I_CC
Operating Supply Current
I_OUT = 0mA
● 4.8
5
5.2
V
●
8
15
µA
V_R
Output Ripple
V_IN = 3V, I_OUT = 60mA, C_OUT = 4.7µF (Note 3)
45
mV_P-P
η
Efficiency
V_IN = 3V, I_OUT = 60mA (Note 3)
82
%
I_SC
Output Short-Circuit Current
V_OUT = 0V
●
120
240
mA
LTC3221
V_IN
Input Supply Voltage
V_FB
Feedback Voltage
R_OL
Open-Loop Impedance
V_IN = 1.8V, V_OUT = 3V (Note 4)
I_CC
Operating Supply Current
I_OUT = 0mA
I_FB
FB Input Current
FB = 1.33V, V_IN = 2V
● 1.8
5.5
V
● 1.181 1.23 1.279
V
●
10
20
Ω
●
5
12
µA
● –100
100
nA
3221f
2