Datasheet

LTC6902
2
6902f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
∆f
OUT
Frequency Accuracy (Notes 2, 3) V
+
= 5V 5kHz ≤ f
OUT
≤ 10MHz ±0.5 ±1.5 %
1kHz ≤ f
OUT
≤ 5kHz ±2.0 %
10MHz ≤ f
OUT
≤ 20MHz ● ±3.0 ±4.0 %
5kHz ≤ f
OUT
≤ 10MHz, LTC6902C ● ±2.0 %
5kHz < f
OUT
≤ 10MHz, LTC6902I ● ±2.5 %
V
+
= 2.7V 5kHz ≤ f
OUT
≤ 10MHz ±0.5 ±1.5 %
1kHz ≤ f
OUT
≤ 5kHz ±2.0 %
5kHz ≤ f
OUT
≤ 10MHz, LTC6902C ● ±2.0 %
5kHz ≤ f
OUT
≤ 10MHz, LTC6902I ● ±2.5 %
R
SET
Frequency Setting Resistor Range ∆f
OUT
 < 1.5%, V
+
= 5V ● 20 400 kΩ
∆f
OUT
 < 1.5%, V
+
= 2.7V ● 20 400 kΩ
∆f
OUT
/∆T Frequency Drift Over Temperature R
SET
= 63.2k ● ±0.004 %/°C
(Note 3)
∆f
OUT
/∆V Frequency Drift Over Supply (Note 3) V
+
= 2.7V to 5V, R
SET
= 63.2k ● 0.04 0.12 %/V
Timing Jitter (Note 4) 20k ≤ R
SET
≤ 400k
Pin 2 = V
+
(N = 100) 0.1 %
Pin 2 = Open (N = 10) 0.2 %
Pin 2 = 0V (N = 1) 0.6 %
Long-Term Stability of 300 ppm/√kHr
Output Frequency
Duty Cycle (Note 5) Pin 2 = V
+
or Open (N = 100 or 10)
Pin 3 = 0V (2-Phase, M = 1)
● 49.0 50.0 51.0 %
Pin 3 = Open (3-Phase, M = 3)
● 32.3 33.3 34.3 %
Pin 3 = V
+
(4-Phase, M = 4) ● 49.0 50.0 51.0 %
Pin 2 = 0V (N = 1)
Pin 3 = 0V (2-Phase, M = 1)
● 45.0 50.0 55.0 %
Pin 3 = Open (3-Phase, M = 3)
● 32.3 33.3 34.3 %
Pin 3 = V
+
(4-Phase, M = 4) ● 49.0 50.0 51.0 %
(Note 1)
Supply Voltage (V
+
) to GND ........................–0.3V to 6V
Voltage On Any Pin
(Referred to GND) .........................–0.3V to (V
+
+ 0.3V)
Operating Temperature Range (Note 9)
LTC6902C .......................................... –40°C to 85°C
LTC6902I............................................ –40°C to 85°C
Specified Temperature Range (Note 10)
LTC6902C .......................................... –40°C to 85°C
LTC6902I............................................ –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
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Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER
PART NUMBER
MS PART MARKING
LTK2
LTK3
LTC6902CMS
LTC6902IMS
T
JMAX
= 150°C, θ
JA
= 250°C/W
1
2
3
4
5
V
+
DIV
PH
OUT1
OUT2
10
9
8
7
6
SET
MOD
GND
OUT4
OUT3
TOP VIEW
MS PACKAGE
10-LEAD PLASTIC MSOP
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= 2.7V to 5.5V, R
L
= 5k, C
L
= 5pF, Pin 3 (PH) = 0V (2-phase, M = 1)
unless otherwise specified. Pin 9 (MOD) is at 0V unless otherwise specified. R
SET
is defined as a resistor connected from the SET pin
to the V
+
pin. R
MOD
is defined as a resistor connected from the MOD pin to the V
+
pin.
ELECTRICAL CHARACTERISTICS
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