CS5166
Absolute Maximum Ratings
Operating Junction Temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to 150°C
Lead Temperature Soldering:
Reflow (SMD styles only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Sec max. above 183˚C, 230˚C Peak
Storage Temperature Range, T
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65° to 150˚C
Pin Symbol
Pin Name
V
MAX
16V
6V
6V
6V
6V
6V
16V
16V
6V
6V
0V
0V
V
MIN
-0.3V
-0.3V
-0.3V
-0.3V
-0.3V
-0.3V
-0.3V
-0.3V
-0.3V
-0.3V
0V
0V
I
SOURCE
N/A
200µA
10mA
1mA
1mA
1mA
1.5A Peak
200mA DC
1.5A Peak
200mA DC
1mA
10µA
1.5A Peak
200mA DC
100mA
I
SINK
1.5A Peak 200mA DC
10µA
1mA
1mA
50mA
10µA
1.5A Peak
200mA DC
1.5A Peak
200mA DC
1mA
30mA
N/A
N/A
V
CC
SS
COMP
V
FB
C
OFF
V
ID0-4
GATE(H)
GATE(L)
I
SENSE
PWRGD
PGnd
LGnd
IC Power Input
Soft Start Capacitor
Compensation Capacitor
Voltage Feedback and Current
Sense Comparator Input
Off-Time Capacitor
Voltage ID DAC Inputs
High-Side FET Driver
Low-Side FET Driver
Current Sense Comparator Input
Power-Good Output
Power Ground
Logic Ground
Package Pin Description
PACKAGE PIN #
PIN SYMBOL
FUNCTION
1,2,3,4,6
V
IDO
– V
ID4
Voltage ID DAC inputs. These pins are internally pulled up to 5V if left
open. V
ID4
selects the DAC range. When V
ID4
is high (logic one), the
Error Amp reference range is 2.125V to 3.525V with 100mV increments.
When V
ID4
is low (logic zero), the Error amp reference voltage is 1.325V
to 2.075V with 50mV increments.
Soft Start Pin. A capacitor from this pin to LGnd sets the Soft Start and
fault timing.
Off-Time Capacitor Pin. A capacitor from this pin to LGnd sets both the
normal and extended off time.
Current Sense Comparator Inverting Input
Input Power Supply Pin.
High Side Switch FET driver pin.
High Current ground for the GATE(H) and GATE(L) pins.
Low Side Synchronous FET driver pin.
Power-Good Output. Open collector output drives low when V
FB
is out
of regulation.
Reference ground. All control circuits are referenced to this pin.
Error Amp output. PWM Comparator reference input. A capacitor to
LGnd provides Error Amp compensation.
Error Amp, PWM Comparator feedback input, Current Sense
Comparator Non-Inverting input, and PWRGD comparator input.
5
7
8
9
10
11
12
13
14
15
16
SS
C
OFF
I
SENSE
V
CC
GATE(H)
PGnd
GATE(L)
PWRGD
LGnd
COMP
V
FB
2
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
