CS51022ADBG ON Semiconductor, CS51022ADBG Datasheet - Page 9

• Manufacturer Part Number: CS51022ADBG
• Description: IC CTRLR PWM ENH SYNC 16-TSSOP
• Manufacturer: ON Semiconductor

Specifications of CS51022ADBG

• 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
• Duty Cycle (max): 83 %
• Output Current: 1000 mA
• Mounting Style: SMD/SMT
• Switching Frequency: 1000 KHz
• Operating Supply Voltage: - 0.3 V to + 20 V
• Maximum Operating Temperature: + 150 C
• Fall Time: 15 ns
• Rise Time: 60 ns
• Synchronous Pin: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Synchronization
several controllers. When SYNC pins are connected together,
the converters will lock to the highest switching frequency. The
fastest controller becomes the master, producing a 4.3 V, 200
ns pulse train. Only one, the highest frequency SYNC signal,
will appear on the SYNC line.
Sleep
is placed in sleep mode when SLEEP is driven high. In sleep
mode, the controller and MOSFET are turned off. Connect
to GND for normal operation. The sleep mode operates at
VCC ≤ 15 V.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
*This package is inherently Pb−Free.
ORDERING INFORMATION
Specifications Brochure, BRD8011/D.
A bi−directional synchronization is provided to synchronize
The sleep input is an active high input. The CS51022A/4A
CS51021AED16
CS51021AEDR16
CS51021AEDR16G
CS51022ADBG
CS51022ADBR2G
CS51022AED16
CS51022AEDR16
CS51022AEDR16G
CS51023AED16
CS51023AEDR16
CS51023AEDR16G
2500
2000
1500
1000
500
0
5
8
Figure 6. Frequency vs. R
4
5
10
3
2
7
1
6
15
Device
20
Capacitor Values
25
R
T
CS51021A, CS51022A, CS51023A, CS51024A
(kW)
30
1. C
2. C
3. C
4. C
5. C
6. C
7. C
8. C
35
T
for Discrete
T
T
T
T
T
T
T
T
= 47 pF
= 100 pF
= 150 pF
= 220 pF
= 390 pF
= 470 pF
= 560 pF
= 680 pF
40
45
http://onsemi.com
50
TSSOP−16*
TSSOP−16*
(Pb−Free)
(Pb−Free)
(Pb−Free)
Package
SOIC−16
SOIC−16
SOIC−16
SOIC−16
SOIC−16
SOIC−16
9
Oscillator and Duty Cycle Limit
the R
1.5 V.
t
capacitor’s discharge current is trimmed, the maximum duty
cycle is well defined. It is determined by the ratio between the
timing resistor R
6 and 7 to select appropriate values for R
ON
100
The switching frequency is set by R
The maximum duty cycle is set by the ratio of the on time,
90
80
70
60
50
40
, and the whole period, T = t
T
5
C
5
T
pin. C
10
Figure 7. Duty Cycle vs. R
f SW +
15
T
T
and the timing capacitor C
1
charges and discharges between 3.0 V and
6
T SW
20
1
Capacitor Values
2
; T SW + t CH ) t DIS
25
R
T
2500 Tape & Reel
2500 Tape & Reel
2500 Tape & Reel
2500 Tape & Reel
ON
30
7
(kW)
3
48 Units / Rail
48 Units / Rail
48 Units / Rail
48 Units / Rail
Shipping
+ t
8
35
OFF
4
T
and C
T
. Because the timing
T
for Discrete
1. C
2. C
3. C
4. C
5. C
6. C
7. C
8. C
40
and C
†
T
. Refer to figures
T
T
T
T
T
T
T
T
T
45
= 47 pF
= 100 pF
= 150 pF
= 220 pF
= 390 pF
= 470 pF
= 560 pF
= 680 pF
connected to
T
.
50
55