LT1054L Datasheet, PDF (3/16 Pages) Linear Technology – Switched-Capacitor Voltage Converter with Regulator

LT1054/LT1054L
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. (Note 7)
PARAMETER
Supply Current
Supply Voltage Range
Voltage Loss (V_IN – V_OUT)
Output Resistance
Oscillator Frequency
Reference Voltage
Regulated Voltage
Line Regulation
Load Regulation
Maximum Switch Current
Supply Current in Shutdown
CONDITIONS
I_LOAD = 0mA
LT1054
LT1054L
LT1054: V_IN = 3.5V
V_IN = 15V
LT1054L: V_IN = 3.5V
V_IN = 7V
C_IN = C_OUT = 100µF Tantalum (Note 4)
I_OUT = 10mA
I_OUT = 100mA
I_OUT = 125mA (LT1054L)
∆I_OUT = 10mA to 100mA (Note 5)
LT1054: 3.5V ≤ V_IN ≤ 15V
LT1054L: 3.5V ≤ V_IN ≤ 7V
I_REF = 60µA, T_J = 25°C
V_IN = 7V, T_J = 25°C, R_L = 500Ω (Note 6)
LT1054: 7V ≤ V_IN ≤ 12V, R_L = 500Ω (Note 6)
V_IN = 7V, 100Ω ≤ R_L ≤ 500Ω (Note 6)
V_PIN1 = 0V
MIN TYP MAX
q
2.5
4.0
q
3.0
5.0
q
2.5
4.0
q
3.0
5.0
q
3.5
15
q
3.5
7
q
0.35 0.55
q
1.10 1.60
q
1.35 1.75
q
10
15
q
15
25
40
q
15
25
35
2.35 2.50 2.65
q 2.25
2.75
– 4.70 – 5.00 – 5.20
q
5
25
q
10
50
300
q
100 200
UNITS
mA
mA
mA
mA
V
V
V
V
V
Ω
kHz
kHz
V
V
V
mV
mV
mA
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The absolute maximum supply voltage rating of 16V is for
unregulated circuits using LT1054. For regulation mode circuits using
LT1054 with V_OUT ≤ 15V at Pin 5 (Pin 11 on S package), this rating may
be increased to 20V. The absolute maximum supply voltage for LT1054L
is 7V.
Note 3: The devices are guaranteed by design to be functional up to the
absolute maximum junction temperature.
Note 4: For voltage loss tests, the device is connected as a voltage
inverter, with pins 1, 6, and 7 (3, 12, and 13 S package) unconnected.
The voltage losses may be higher in other configurations.
Note 5: Output resistance is defined as the slope of the curve, (∆V_OUT vs
∆I_OUT), for output currents of 10mA to 100mA. This represents the linear
portion of the curve. The incremental slope of the curve will be higher at
currents < 10mA due to the characteristics of the switch transistors.
Note 6: All regulation specifications are for a device connected as a
positive-to-negative converter/regulator with R1 = 20k, R2 = 102.5k,
C1 = 0.002µF, (C1 = 0.05µF S package) C_IN = 10µF tantalum,
C_OUT = 100µF tantalum.
Note 7: The S8 package uses a different die than the H, J8, N8 and S
packages. The S8 device will meet all the existing data sheet parameters.
See Regulation and Capacitor Selection in the Applications Information
section for differences in application requirements.
1054lfe
3