User guide

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
--1.0mA
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