LMC7660 Datasheet, PDF (2/12 Pages) National Semiconductor (TI) – Switched Capacitor Voltage Converter

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Input Voltage on Pin 6, 7
(Note 2)
Current into Pin 6 (Note 2)
Output Short Circuit
Duration (V⁺ ≤ 5.5V)
10.5V
−0.3V to (V⁺ + 0.3V)
for V⁺ < 5.5V
(V⁺ − 5.5V) to (V⁺ + 0.3V)
for V⁺ > 5.5V
20 µA
Continuous
Power Dissipation (Note 3)
Dual-In-Line Package
Surface-Mount Package
T_J Max (Note 3)
θ_JA (Note 3)
Dual-In-Line Package
Surface-Mount Package
Storage Temp. Range
Lead Temperature
(Soldering, 5 sec.)
ESD Tolerance (Note 7)
1.4W
0.6W
150˚C
90˚C/W
160˚C/W
−65˚C ≤ T ≤ 150˚C
260˚C
± 2000V
Electrical Characteristics (Note 4)
Symbol
I_s
V⁺H
V⁺L
R_out
F_osc
P_eff
V_{o eff}
I_osc
Parameter
Supply Current
Supply Voltage
Range High (Note 6)
Supply Voltage
Range Low
Output Source
Resistance
Oscillator
Frequency
Power Efficiency
Voltage Conversion
Efficiency
Oscillator Sink or
Source Current
Conditions
R_L = ∞
R_L = 10 kΩ, Pin 6 Open
Voltage Efficiency ≥ 90%
R_L = 10 kΩ, Pin 6 to Gnd.
Voltage Efficiency ≥ 90%
I_L = 20 mA
V = 2V, I_L = 3 mA
Pin 6 Short to Gnd.
R_L = 5 kΩ
R_L = ∞
Pin 7 = Gnd. or V⁺
Typ
120
3 to 10
1.5 to 3.5
55
110
10
97
99.9
3
LMC7660IN/
LMC7660IM
Limit
(Note 5)
200
400
3 to 10
3 to 10
1.5 to 3.5
1.5 to 3.5
100
120
200
300
95
90
97
95
Units
Limits
µA
max
V
V
Ω
max
Ω
max
kHz
%
min
%
min
µA
Note 1: Absolute Maximum ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its rated operating conditions. See Note 4 for conditions.
Note 2: Connecting any input terminal to voltages greater than V⁺or less than ground may cause destructive latchup. It is recommended that no inputs from sources
operating from external supplies be applied prior to “power-up” of the LMC7660.
Note 3: For operation at elevated temperature, these devices must be derated based on a thermal resistance of θ_ja and T_j max, T_j = T_A + θ_ja P_D.
Note 4: Boldface numbers apply at temperature extremes. All other numbers apply at T_A = 25˚C, V⁺ = 5V, C_osc = 0, and apply for the LMC7660 unless otherwise
specified. Test circuit is shown in Figure 1 .
Note 5: Limits at room temperature are guaranteed and 100% production tested. Limits in boldface are guaranteed over the operating temperature range (but not
100% tested), and are not used to calculate outgoing quality levels.
Note 6: The LMC7660 can operate without an external diode over the full temperature and voltage range. The LMC7660 can also be used with the external diode
Dx, when replacing previous 7660 designs.
Note 7: The test circuit consists of the human body model of 100 pF in series with 1500Ω.
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