Rainbow Electronics LM3815 - Manual (Page 3)

Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Absolute Maximum Supply Voltage 5.5V
Power Dissipation (Note 2)
ESD Susceptibility (Note 3) 1.5 kV
Sense Current (peak, for 200 msec) (Note 4) 10A
Sink Current for PWM pin 1 mA
Voltage on Pin 5 5.25V
Maximum Junction Temperature 150˚C
Storage Temperature −65˚C to +150˚C
Lead Temperature (Soldering, 10 sec) 260˚C
Operating Ratings
(Note 1)
Input Voltage 2.0V to 5.25V
Sense Current (continuous) (Note 4) 7A
Junction Temperature Range −40˚C to +125˚C
Electrical Characteristics
LM3814-1.0, LM3815-1.0
V
DD
= 5.0V for the following specifications. Supply bypass capacitor is 1µF and filter capacitor is 0.1µF.
Symbol Parameter Conditions
Typ
(Note 5)
Limit
(Note 6)
Units
I
ACC
Average Current Accuracy
(Note 7)
at 0.9A current 0.9 A
0.868 / 0.850 A (min)
0.932 / 0.950 A (max)
e
n
Effective Output Noise (rms) 12 mA
LM3814-7.0, LM3815-7.0
V
DD
= 5.0V for the following specifications. Supply bypass capacitor is 1µF and filter capacitor is 0.1µF.
Symbol Parameter Conditions
Typ
(Note 5)
Limit
(Note 6)
Units
I
ACC
Average Current Accuracy
(Note 7)
at 2.5A current (Note 8) 2.5 A
2.350 / 2.288 A (min)
2.650 / 2.712 A (max)
e
n
Effective Output Noise (rms) 120 mA
Common Device Parameters
Unless otherwise specified, V
DD
= 5.0V for the following specifications. Supply bypass capacitor is 1µF and filter capacitor is
0.1µF.
Symbol Parameter Conditions
Typ
(Note 5)
Limit
(Note 6)
Units
I
Q1
Quiescent Current Normal Mode, SD = high 100 µA
160 µA (max)
I
Q2
Quiescent Current Shutdown Mode, SD = low 2.5 µA
10 µA (max)
D
RES
PWM Resolution 0.8 %
t
S
Sampling Time 6 ms
4 ms (min)
10 ms (max)
f
P
Frequency of PWM Waveform 160 Hz
100 Hz (min)
250 Hz (max)
V
TH
Threshold High Level for SD 1.2 V
1.8 V (min)
V
TL
Threshold Low Level for SD 1.3 V
0.7 V (max)
V
OH
Logic High Level for PWM Load current = 1mA, 2V ≤ V
DD
≤
5.25V
V
DD
− 0.05
V
DD
− 0.2
V
V (min)
LM3814/LM3815
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