CS51022ADB ON Semiconductor, CS51022ADB Datasheet - Page 6

• Manufacturer Part Number: CS51022ADB
• Description: IC CTRLR PWM ENH SYNC 16-TSSOP
• Manufacturer: ON Semiconductor

Specifications of CS51022ADB

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 83%
• Voltage - Supply: 8.2 V ~ 20 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: Yes
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-TSSOP
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ELECTRICAL CHARACTERISTICS (continued)
−40°C < T
PACKAGE PIN DESCRIPTION
Current Sense
OV & UV Voltage Monitors
SOFT START (SS)
4. Guaranteed by design, not 100% tested in production.
OFFSET Voltage
Blanking Time
Blanking Disable Voltage
Second Current Threshold Gain
I
Minimum On Time
Gain
OV Monitor Threshold
OV Hysteresis Current
UV Monitor Threshold
UV Monitor Hysteresis
Charge Current
Discharge Current
Charge Voltage, V
Discharge Voltage, V
SENSE
16 Lead SO Narrow
PACKAGE PIN #
Input Resistance
J
Characteristic
< 150°C, 3.0 V < V
10
11
1
2
3
3
4
5
6
7
8
9
SS
SS
C
< 20 V, 8.2 V < V
CS51021A, CS51022A, CS51023A, CS51024A
SLEEP (CS51022A/4A)
SYNC (CS51021A/3A)
Note 4
Adjust V
GATE High to Low
Note 4
SS = 2.0 V
SS = 2.0 V
PIN SYMBOL
SLOPE
I
COMP
GATE
SENSE
R
I
V
OV
UV
SET
SS
T
FB
C
FB
T
CC
< 20 V, R
Test Conditions
(Unless otherwise stated, specifications apply for −40°C < T
http://onsemi.com
−
−
−
−
−
−
−
−
−
T
= 12 kΩ, C
External power switch driver with 1.0 A peak capability.
Current sense amplifier input.
Bi−directional synchronization. Locks to the highest frequency.
Active high chip disable. In sleep mode, V
Additional slope to the current sense signal. Internal current source
charges the external capacitor.
Undervoltage protection monitor.
Overvoltage protection monitor.
Timing resistor R
maximum duty cycle, D
Voltage at this pin sets pulse−by−pulse overcurrent threshold, and sec-
ond threshold (1.33 times higher) with Soft Start retrigger (hiccup mode).
Feedback voltage input. Connected to the error amplifier inverting input.
Error amplifier output. Frequency compensation network is usually
connected between COMP and V
Charging external capacitor restricts error amplifier output voltage dur-
ing the start or fault conditions (hiccup).
6
T
= 390 pF)
T
and capacitor C
MAX.
0.09
1.21
0.78
1.38
0.25
Min
−10
−70
250
1.8
2.4
4.4
30
25
−
−
FUNCTION
FB
T
pins.
determine oscillator frequency and
−12.5
1000
0.10
1.33
0.80
1.45
0.27
Typ
−55
2.0
5.0
2.5
4.7
55
70
75
REF
and GATE are turned off.
A
< 85°C,
Max
0.11
1.45
0.82
1.52
0.30
160
−15
100
−40
110
2.2
2.6
5.0
−
−
Unit
V/V
V/V
mV
kΩ
μA
μA
μA
ns
ns
V
V
V
V
V
V