SI4724CY Datasheet, PDF (4/8 Pages) Vishay Siliconix – N-Channel Synchronous MOSFETs with Break-Before-Make

Si4724CY
Vishay Siliconix
APPLICATION CIRCUIT
0 V to 30 V
5V
DC-DC
Controller
V_DD
Si4724 CBOOT
D₁
SYNC EN
MOSFET
Drive Circuitry
with
Break-Before-
Make
IN
GND
Q₁
S₁
D₂
Q₂
S₂
GND
Power Up Sequence:
Ensure V_DD is within spec before allowing IN or SYNC EN to be set high.
Power Down Sequence:
Ensure IN and SYNC EN are low before turning V_DD off.
FIGURE 1.
C_BOOT
V_OUT
+
GND
PIN CONFIGURATION
D₁ 1
D₁ 2
GND 3
IN 4
SYNC EN 5
S₂ 6
S₂ 7
S_{2 8}
SO-16
16 S1
15 S1
14 CBOOT
13 VDD
12 D2
11 D2
10 D2
9 D2
Top View
Order Number: Si4724CY
www.vishay.com
4
TRUTH TABLE
Sync EN
IN
H
H
H
L
L
H
L
L
Q₁
Q₂
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
PIN DESCRIPTION
Pin Number Symbol
Description
1, 2
3
4
5
6, 7, 8
9, 10, 11, 12
13
14
15, 16
D₁
GND
IN
SYNC EN
S₂
D₂
V_DD
C_BOOT
S₁
Highside MOSFET Drain
Ground
Input Logic Signal
Synchronous Enable
Lowside MOSFET Source
Lowside MOSFET Drain
Logic Supply, decoupling to GND with a
cap is strongly recommended.
Bootstrap Capacitor For Upper MOSFET
Highside MOSFET Source
Document Number: 71863
S-03922—Rev. D, 19-May-03