Cirrus Logic CS1680 - Manual (Page 4)

CS1680
4 DS1055F1
3. CHARACTERISTICS AND SPECIFICATIONS
3.1 Electrical Characteristics
Typical characteristics conditions:
- T
A
= 25 °C, V
DD
= 12V, GND = 0 V
- All voltages are measured with respect to GND.
- Unless otherwise specified, all currents are positive when
flowing into the IC.
Minimum/Maximum characteristics conditions:
- T
J
= -40°C to +125 °C, V
DD
= 11V to 17V, GND = 0 V
Parameter Condition Symbol Min Typ Max Unit
VDD Supply Voltage
Operating Range
After Turn-on V
DD
11 - 17 V
Turn-on Threshold Voltage V
DD
Increasing V
ST(th)
- 8.5 - V
Turn-off Threshold Voltage (UVLO) V
DD
Decreasing V
STP(th)
- 7.5 - V
GPIO Low (Note 1) V
DD
> V
ST(th)
K
GPIO(low)
- 50.0 - %
Zener Voltage (Note 2) I
DD
= 20mA V
Z
18.5 - 19.8 V
VDD Supply Current
Startup Supply Current
V
DD
<V
ST(th)
I
ST
- - 1.0 mA
Operating Supply Current (Note 3) C
L
= 0.25nF, f
sw
70 kHz - 11 - mA
Reference
Reference Current
I
ref
- 64 - A
Clamp Gate Drive
Output Source Resistance
Z
CLAMP(Source)
- 290 - 
Output Sink Resistance Z
CLAMP(Sink)
- 208 - 
Boost Output Mode1 Algorithm
Regulation Target
(Notes 1, 4) K
Mode1(target)
- 73.3 - %
Boost Output Mode2 Mode Algorithm
Regulation Target
(Notes 1, 5) K
Mode2(target)
- 78.4 - %
Boost Output Mode3 Algorithm
Regulation Range Low
(Notes 1, 6)
CS1680-00
CS1680-02 K
Mode3(low)
-
- 60.0
65.9 -
- %
%
Regulation Range High (Notes 1, 6) K
Mode3(high)
- 82.0 - %
Accelerated Decrease On
CS1680-00
CS1680-02 K
DEC(on)
-
- 52.2
60.4 -
- %
%
Accelerated Increase On (Notes 1, 7)
Accelerated Increase Off (Notes 1, 7)
K
CLAMP(on)
K
CLAMP(off)
-
- 87.8
85.1 -
- %
%
Boost Pulse Width Modulator
Minimum On Time
T1
BST(min)
- 0.1 - s
Maximum On Time T1
BST(max)
- 800 - s
Constant Off Time Mode1 T2
BST(fixed)
- 0.5 - s
Minimum Off Time Mode2 & Mode3 T2
BST(min)
- 0.2 - s
Maximum Off Time Mode2 & Mode3 T2
BST(max)
- 0.9 - s
Minimum Switching Frequency - 1.3 - kHz
Maximum Switching Frequency - 3.3 - MHz