NCL30081
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7
Table 3. ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values T
J
= 25°C, V
CC
= 12 V;
For min/max values T
J
= −40°C to +125°C, Max T
J
= 150°C, V
CC
= 12 V)
Description UnitMaxTypMinSymbolTest Condition
VALLEY SELECTION
Valley thresholds
1
st
to 2
nd
valley transition at LL and 2
nd
to 3
rd
valley HL
2
nd
to 1
st
valley transition at LL and 3
rd
to 2
nd
valley HL
2
nd
to 4
th
valley transition at LL and 3
rd
to 5
th
valley HL
4
th
to 2
nd
valley transition at LL and 5
th
to 3
rd
valley HL
4
th
to 7
th
valley transition at LL and 5
th
to 8
th
valley HL
7
th
to 4
th
valley transition at LL and 8
th
to 5
th
valley HL
7
th
to 11
th
valley transition at LL and 8
th
to 12
th
valley HL
11
th
to 7
th
valley transition at LL and 12
th
to 8
th
valley HL
11
th
to 13
th
valley transition at LL and 12
th
to 15
th
valley HL
13
th
to 11
th
valley transition at LL and 15
th
to 12
th
valley HL
V
REF
decreases
V
REF
increases
V
REF
decreases
V
REF
increases
V
REF
decreases
V
REF
increases
V
REF
decreases
V
REF
increases
V
REF
decreases
V
REF
increases
V
VLY1−2/2−3
V
VLY2−1/3−2
V
VLY2−4/3−5
V
VLY4−2/5−3
V
VLY4−7/5−8
V
VLY7−4/8−5
V
VLY7−11/8−12
V
VLY11−7/12−8
V
VLY11−13/12−15
V
VLY13−11/15−12
177.5
185.0
117.5
125.0
–
–
–
–
–
–
187.5
195.0
125.0
132.5
75.0
82.5
37.5
50.0
15.0
20.0
197.5
205.0
132.5
140.0
–
–
–
–
–
–
mV
THERMAL SHUTDOWN
Thermal Shutdown (Note 4)
Device switching
(F
SW
around 65 kHz)
T
SHDN
130 155 170 °C
Thermal Shutdown Hysteresis (Note 4) T
SHDN(HYS)
– 55 – °C
BROWN−OUT
Brown−Out ON level (IC start pulsing)
V
SD
increasing V
BO(on)
0.90 1 1.10 V
Brown−Out OFF level (IC shuts down) V
SD
decreasing V
BO(off)
0.85 0.9 0.95 V
BO comparators delay t
BO(delay)
– 30 –
ms
Brown−Out blanking time t
BO(blank)
35 50 65 ms
Brown−out pin bias current I
BO(bias)
−250 – 250 nA
4. Guaranteed by design
