Datasheet

LM7705
www.ti.com SNVS420B –NOVEMBER 2008–REVISED MARCH 2013
3.3V Electrical Characteristics (continued)
Unless otherwise specified, all limits are ensured for T
A
= 25°C, V
DD
= 3.3V, V
SS
= 0V, SD = 0V, C
FLY
= 5 µF, C
RES
= 22 µF,
C
OUT
= 22 µF. Boldface limits apply at temperature extremes
(1)
.
Symbol Parameter Conditions Min
(2)
Typical
(3)
Max
(2)
Units
V
IL
Shutdown Input Low 1.6
V
1.25
V
IH
Shutdown Input High 1.85
V
2.15
I
C
Shutdown Pin Input Current SD = V
DD
50 pA
Load Regulation 0 mA ≤ I
OUT
≤ −20 mA 0.12 0.6
%/mA
0.85
Line Regulation 3V ≤ V
DD
≤ 5.25V (No Load) -0.2 0.29 0.7
%/V
1.1
5.0V Electrical Characteristics
Unless otherwise specified, all limits are ensured for T
A
= 25°C, V
DD
= 5.0V, V
SS
= 0V, SD = 0V, C
FLY
= 5 µF, C
RES
= 22 µF,
C
OUT
= 22 µF. Boldface limits apply at temperature extremes
(1)
.
Symbol Parameter Conditions Min
(2)
Typical
(3)
Max
(2)
Units
V
OUT
Output Voltage I
OUT
= 0 mA −0.242 −0.233 −0.219
−0.251 −0.209
V
I
OUT
= −20 mA −0.242 −0.226 −0.219
−0.251 −0.209
V
R
Output Voltage Ripple I
OUT
= −20 mA 4 mV
PP
I
S
Supply Current No Load 60 103 135
μA
240
I
SD
Shutdown Supply Current SD = V
DD
20 nA
η
POWER
Current Conversion Efficiency −5 mA ≤ I
OUT
≤ −20 mA 98 %
η
POWER
Current Conversion Efficiency I
OUT
= −5 mA 98 %
t
ON
Turn On Time I
OUT
= −5 mA 200 μs
t
OFF
Turn Off Time I
OUT
= −5 mA 700 μs
t
OFF CP
Turn Off Time Charge Pump I
OUT
= −5 mA 11 μs
Z
OUT
Output Impedance −1 mA ≤ I
OUT
≤ −20 mA 0.26 0.8
Ω
1.3
I
O_MAX
Maximum Output Current V
OUT
< − 200 mV −35 mA
f
OSC
Oscillator Frequency 91 kHz
V
IL
Shutdown Input Low 2.55
V
1.95
V
IH
Shutdown Input High 2.8
V
3.25
I
C
Shutdown Pin Input Current SD = V
DD
50 pA
Load Regulation 0 mA ≤ I
OUT
≤ −20 mA 0.14 0.6
%/mA
0.85
Line Regulation 3V ≤ V
DD
≤ 5.25V (No Load) −0.2 0.29 0.7
%/V
1.1
(1) Boldface limits apply to temperature range of −40°C to 125°C
(2) All limits are specified by testing or statistical analysis.
(3) Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary
over time and will also depend on the application and configuration. The typical values are not tested and are not specified on shipped
production material.
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