National Semiconductor LM7705 Manual page 4

Low noise negative bias generator
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5.0V Electrical Characteristics
5.0V, V
= 0V, SD = 0V, C
SS
Symbol
Parameter
V
Output Voltage
OUT
V
Output Voltage Ripple
R
I
Supply Current
S
I
Shutdown Supply Current
SD
η
Current Conversion Efficiency
POWER
η
Current Conversion Efficiency
POWER
t
Turn On Time
ON
t
Turn Off Time
OFF
t
Turn Off Time Charge Pump
OFF CP
Z
Output Impedance
OUT
I
Maximum Output Current
O_MAX
f
Oscillator Frequency
OSC
V
Shutdown Input Low
IL
V
Shutdown Input High
IH
I
Shutdown Pin Input Current
C
Load Regulation
Line Regulation
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: Human Body Model, applicable std. MIL-STD-883, Method 3015.7. Machine model, applicable std JESD22–A115–A (ESSD MM srd of JEDEC). Field
induced Charge-Device Model, applicable std. JESD22–C101–C. (ESD FICDM std of JEDEC).
Note 3: The maximum power dissipation is a function of T
)/ θ
P
= (T
- T
. All numbers apply for packages soldered directly onto a PC board.
D
J(MAX)
A
JA
Note 4: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating
of the device such that T
= T
. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self-heating where
J
A
T
> T
.
J
A
Note 5: Boldface limits apply to temperature range of −40°C to 125°C
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: 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 guaranteed on shipped production material.
Unless otherwise specified, all limits are guaranteed for T
= 5 µF, C
= 22 µF, C
FLY
RES
OUT
I
= 0 mA
OUT
I
= −20 mA
OUT
I
= −20 mA
OUT
No Load
SD = V
−5 mA
I
= −5 mA
OUT
I
= −5 mA
OUT
I
= −5 mA
OUT
I
= −5 mA
OUT
−1 mA
V
< − 200 mV
OUT
SD = V
0 mA
3V
V
, θ
, and T
J(MAX)
JA
= 22 µF. Boldfacelimits apply at temperature extremes (Note 5).
Conditions
(Note 6)
−0.242
−0.251
−0.242
−0.251
DD
I
−20 mA
OUT
I
−20 mA
OUT
3.25
DD
I
−20 mA
OUT
−0.2
5.25V (No Load)
DD
. The maximum allowable power dissipation at any ambient temperature is
A
3
A
Min
Typical
Max
(Note 7)
(Note 6)
−0.233
−0.219
−0.209
−0.226
−0.219
−0.209
4
60
103
135
240
20
98
98
200
700
11
0.26
0.8
1.3
−35
91
2.55
1.95
2.8
50
0.14
0.6
0.85
0.29
0.7
1.1
= 25°C, V
=
DD
Units
V
mV
PP
μA
nA
%
%
μs
μs
μs
Ω
mA
kHz
V
V
pA
%/mA
%/V
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