Datasheet

LM2662, LM2663
www.ti.com SNVS002D –JANUARY 1999–REVISED MAY 2013
Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C, and limits in boldface type apply over the full Operating Junction Temperature
Range. Unless otherwise specified: V+ = 5V, FC = Open, C
1
= C
2
= 47 μF.
(1)
Symbol Parameter Condition Min Typ Max Units
V+ Supply Voltage R
L
= 1k Inverter, LV = Open 3.5 5.5
Inverter, LV = GND 1.5 5.5 V
Doubler, LV = OUT 2.5 5.5
I
Q
Supply Current No Load FC = V+ (LM2662)
1.3 4
LV = Open SD = Ground (LM2663) mA
FC = Open 0.3 0.8
I
SD
Shutdown Supply Current (LM2663) 10 μA
V
SD
Shutdown Pin Input Voltage (LM2663) Shutdown Mode 2.0
(2)
V
Normal Operation 0.3
I
L
Output Current 200 mA
R
OUT
Output Resistance
(3)
I
L
= 200 mA 3.5 7 Ω
f
OSC
Oscillator Frequency
(4)
OSC = Open FC = Open 7 20
kHz
FC = V+ 55 150
f
SW
Switching Frequency
(5)
OSC = Open FC = Open 3.5 10
kHz
FC = V+ 27.5 75
I
OSC
OSC Input Current FC = Open ±2
μA
FC = V+ ±10
P
EFF
Power Efficiency R
L
(500) between V
+
and OUT 90 96
%
I
L
= 200 mA to GND 86
V
OEFF
Voltage Conversion Efficiency No Load 99 99.96 %
(1) In the test circuit, capacitors C
1
and C
2
are 47 μF, 0.2Ω maximum ESR capacitors. Capacitors with higher ESR will increase output
resistance, reduce output voltage and efficiency.
(2) In doubling mode, when V
out
> 5V, minimum input high for shutdown equals V
out
− 3V.
(3) Specified output resistance includes internal switch resistance and capacitor ESR.
(4) For LM2663, the oscillator frequency is 150 kHz.
(5) The output switches operate at one half of the oscillator frequency, f
OSC
= 2f
SW
.
Test Circuits
Figure 1. LM2662 and LM2663 Test Circuits
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