LT1054/LT1054L
3
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For more information www.linear.com/LT1054
electrical characteristics
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
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.
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 7)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Current I
LOAD
= 0mA LT1054: V
IN
= 3.5V
V
IN
= 15V
l
l
2.5
3.0
4.0
5.0
mA
mA
LT1054L:
V
IN
= 3.5V
V
IN
= 7V
l
l
2.5
3.0
4.0
5.0
mA
mA
Supply Voltage Range L
T1054
LT1054L
l
l
3.5
3.5
15
7
V
V
Voltage Loss (V
IN
– |V
OUT
|) C
IN
= C
OUT
= 100µF Tantalum (Note 4)
I
OUT
= 10mA
I
OUT
= 100mA
I
OUT
= 125mA (LT1054L)
l
l
l
0.35
1.10
1.35
0.55
1.60
1.75
V
V
V
Output Resistance
∆I
OUT
= 10mA to 100mA (Note 5)
l
10 15 Ω
Oscillator Frequency LT1054: 3.5V ≤ V
IN
≤ 15V
LT1054L: 3.5V ≤ V
IN
≤ 7V
l
l
15
15
25
25
40
35
kHz
kHz
Reference Voltage I
REF
= 60µA, T
J
= 25°C
l
2.35
2.25
2.50 2.65
2.75
V
V
Regulated Voltage V
IN
= 7V, T
J
= 25°C, R
L
= 500Ω (Note 6) –4.70 –5.00 –5.20 V
Line Regulation LT1054: 7V ≤ V
IN
≤ 12V, R
L
= 500Ω (Note 6)
l
5 25 mV
Load Regulation V
IN
= 7V, 100Ω ≤ 500Ω (Note 6)
l
10 50 mV
Maximum Switch Current 300 mA
Supply Current in Shutdown V
PIN1
= 0V
l
100 200 µA
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.
