LTC6902CMS View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC6902CMS' PDF : 16 Pages View PDF
LTC6902
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. V+ = 2.7V to 5.5V, RL= 5k, CL = 5pF, Pin 3 (PH) = 0V (2-phase, M = 1)
unless otherwise specified. Pin 9 (MOD) is at 0V unless otherwise specified. RSET is defined as a resistor connected from the SET pin
to the V+ pin. RMOD is defined as a resistor connected from the MOD pin to the V+ pin.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
V+
Operating Supply Range
q 2.7
5.5
V
IS
Power Supply Current
RSET = 400k, RL = ∞, Pin 2 = V+ (N = 100), fOUT = 5kHz
V+ = 5V
q
V+ = 2.7V
q
0.35 0.55
mA
0.32 0.50
mA
RSET = 20k, RL = ∞, Pin 2 = 0V (N = 1), fOUT = 10MHz
V+ = 5V
q
V+ = 2.7V
q
2.35 3.50
mA
1.40 1.80
mA
RSET = 400k, RL = ∞, Pin 2 = V+ (N = 100), RMOD = 800k
V+ = 5V
q
V+ = 2.7V
q
0.45 0.63
mA
0.34 0.50
mA
RSET = 20k, RL = ∞, Pin 2 = 0V (N = 1), RMOD = 40k
V+ = 5V
q
V+ = 2.7V
q
2.50 3.60
mA
1.40 1.90
mA
VIH_DIV
VIL_DIV
IDIV
High Level DIV Input Voltage
Low Level DIV Input Voltage
DIV Input Current (Note 6)
VIH_PH High Level PH Input Voltage
Pin 2 = V+, V+ = 5V
Pin 2 = 0V, V+ = 5V
q V+ – 0.4
V
q
0.4
V
q
2
4
µA
q –4
–2
µA
q V+ – 0.4
V
VIL_PH Low Level PH Input Voltage
q
0.4
V
IPH
PH Input Currrent (Note 6)
Pin 3 = V+, V+ = 5V
Pin 3 = 0V, V+ = 5V
q
2
4
µA
q –4
–2
µA
VOH
High Level Output Voltage (Note 6) V+ = 5V IOH = – 1mA
(OUT1, OUT2, OUT3, OUT4)
IOH = – 4mA
q 4.75 4.90
V
q 4.40 4.70
V
V+ = 2.7V IOH = – 1mA
IOH = – 4mA
q 2.35
2.6
V
q 1.85
2.2
V
VOL
Low Level Output Voltage (Note 6) V+ = 5V IOL = 1mA
(OUT1, OUT2, OUT3, OUT4)
IOL = 4mA
q
0.05 0.15
V
q
0.20 0.40
V
V+ = 2.7V IOL = 1mA
IOL = 4mA
q
0.1
0.3
V
q
0.4
0.7
V
tr
Output Rise Time (Note 7)
V+ = 5V Pin 2 = V+ or Open (N = 100 or N = 10)
(OUT1, OUT2, OUT3, OUT4)
Pin 2 = 0V (N = 1)
14
ns
7
ns
V+ = 2.7V Pin 2 = V+ or Open (N = 100 or N = 10)
Pin 2 = 0V (N = 1)
19
ns
11
ns
tf
Output Fall Time (Note 7)
V+ = 5V Pin 2 = V+ or Open (N = 100 or N = 10)
(OUT1, OUT2, OUT3, OUT4)
Pin 2 = 0V (N = 1)
13
ns
6
ns
V+ = 2.7V Pin 2 = V+ or Open (N = 100 or N = 10)
Pin 2 = 0V (N = 1)
19
ns
10
ns
Spread Spectrum Frequency
Modulation Spreading Percentage
(Downspread from Maximum
Frequency)
Percent = 100 • (fMAX – fMIN)/fMAX
(Note 8)
V+ = 5V, N = 10, RSET = 20k, RMOD = 10k
V+ = 5V, N = 10, RSET = 20k, RMOD = 40k
V+ = 2.7V, N = 10, RSET = 20k, RMOD = 10k
V+ = 2.7V, N = 10, RSET = 20k, RMOD = 40k
q 35
40
45.0
%
q 7.5
10
12.5
%
q 35
40
45.0
%
q 7.5
10
12.5
%
6902f
3
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