Cirrus Logic CS1613A - Manual (Page 5)

CS1610A/11A
CS1612A/13A
DS976F1 5
Notes: 1. The CS1610A/11A/12A/13A has an internal shunt regulator that limits the voltage on the VDD pin. V
Z
, the shunt regulation
voltage, is defined in the VDD Supply Voltage section on page 4.
2. For test purposes, load capacitance C
L
is connected to pin GD and is equal to 0.25nF.
3. 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.
4. Switching period (T1  T2)  5 s. Period T1 and T2 are defined in the Control Parameters section on page 12.
5. The conductance is specified in Siemens (S or 1/ ). Each LSB of the internal ADC corresponds to 250nS or one parallel 4M
resistor. Full scale corresponds to 256 parallel 4M  resistors or 15.625k.
6. Specifications are guaranteed by design and are characterized and correlated using statistical process methods.
Second Stage Zero-current Detect
FBZCD Threshold V
FBZCD(th)
- 200 - mV
FBZCD Blanking
CS1610A/12A
CS1611A/13A t
FBZCB
-
- 2
2.8
-
- s
s
ZCD Sink Current (Note 3) I
ZCD
-2 - - mA
FBAUX Upper Voltage I
ZCD
= 1mA - V
DD
+0.6 - V
Second Stage Pulse Width Modulator
Minimum On Time - 0.55 - s
Maximum On Time
CS1610A/11A/13A
CS1612A -
- 8.8
12.0
-
- s
s
Minimum Switching Frequency t
FB(Min)
- 625 - Hz
Maximum Switching Frequency (Note 4) t
FB(Max)
- 200 - kHz
Second Stage Gate Driver
Output Source Resistance Z
OUT
- 20.3 - 
Output Sink Resistance Z
OUT
- 9.4 - 
Rise Time C
L
= 0.25nF - - 30 ns
Fall Time C
L
= 0.25nF - - 20 ns
Second Stage Protection
Overcurrent Protection (OCP) V
OCP(th)
- 1.69 - V
Overvoltage Protection (OVP) V
OVP(th)
- 1.25 - V
Open Loop Protection (OLP) V
OLP(th)
- 200 - mV
External Overtemperature Protection (eOTP), Boost Peak Current, Second Stage Frequency Gain
Pull-up Current Source – Maximum I
CONNECT
- 80 - A
Conductance Accuracy (Note 5) - - ±5 
Conductance Offset (Note 5) - ±250 - nS
Current Source Voltage Threshold V
CONNECT(th)
- 1.25 - V
Internal Overtemperature Protection (iOTP)
Thermal Shutdown Threshold (Note 6) T
SD
- 143 - ºC
Thermal Shutdown Hysteresis (Note 6) T
SD(Hy)
- 12 - ºC
Parameter Condition Symbol Min Typ Max Unit