CS1630 Datasheet, PDF (7/56 Pages) Cirrus Logic – 2-Channel TRIAC Dimmable LED Driver IC

CS1630/31
Parameter
Second Stage Pulse Width Modulator
Minimum Switching Frequency
Maximum Switching Frequency
Second Stage Gate Driver
Output Source Resistance
Output Sink Resistance
Rise Time
(Note 5)
Fall Time
(Note 5)
Second Stage Protection
Overcurrent Protection (OCP)
Overvoltage Protection (OVP)
Open Loop Protection (OLP)
External Overtemperature Protection (eOTP)
Pull-up Current Source – Maximum
Conductance Accuracy
(Note 3)
Conductance Offset
(Note 3)
Current Source Voltage Threshold
Internal Overtemperature Protection (iOTP)
Thermal Shutdown Threshold
(Note 4)
Thermal Shutdown Hysteresis (Note 4)
Condition
V_DD = 12V
V_DD = 12V
C_L = 0.25nF
C_L = 0.25nF
Symbol
Min
t_FB(Min)
-
t_FB(Max)
-
-
-
-
-
V_OCP(th)
-
V_OVP(th)
-
V_OLP(th)
-
I_CONNECT
-
-
-
V_CONNECT(th)
-
T_SD
-
T_SD(Hy)
-
Typ
625
200
24
11
-
-
1.69
1.25
200
80
-
± 250
1.25
135
14
Max Unit
-
Hz
-
kHz
-

-

30
ns
20
ns
-
V
-
V
-
mV
-
A
±5

-
nS
-
V
-
ºC
-
ºC
Notes:
1.
The CS1630/31 has an internal shunt
in the VDD Supply Voltage section on
regulator
page 6.
that
limits
the
voltage
on
the
VDD
pin.
V_Z,
the
shunt
regulation
voltage,
is
defined
2. External circuitry should be designed to ensure that the ZCD current drawn from the internal clamp diode when it is forward biased
does not exceed specification.
3. Conductance is the inverse of resistance (1/) and is expressed in siemens (S). A decrease in conductance is equivalent to an
increase in resistance.
4. Specifications are guaranteed by design and are characterized and correlated using statistical process methods.
5. For test purposes, load capacitance (C_L) is 0.25nF and is connected as shown in the following diagram.
VDD
VDD
GD
S1
R1
GND
CL
0.25nF
+15V
Buffer
TP
R3
R2 _-15V
GD OUT
S2
DS954F2
7