ZL2105ALNF Intersil, ZL2105ALNF Datasheet - Page 8

• Manufacturer Part Number: ZL2105ALNF
• Description: IC DGTL DC-DC CTRLR 3A 36QFN
• Manufacturer: Intersil
• Type: Step-Down (Buck), PWM - Voltage Moder

Specifications of ZL2105ALNF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.6 V ~ 5.5 V
• Current - Output: 3A
• Frequency - Switching: 200kHz ~ 2MHz
• Voltage - Input: 4.5 V ~ 14 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3. Typical Application Circuit
The following application circuit represents a typical implementation of the ZL2105.
I
2
C/SMBus
ENABLE
PGOOD
(10.8 V UVLO, 10 ms SS delay, 50 ms SS ramp, 12 V used for low-side FET driver)
8
* Ferrite bead is optional for input noise suppression
Figure 3. 12 V to 3.3 V / 3 A Application Circuit
1
2
3
4
5
6
7
8
9
DGND
SYNC
SA
UVLO
ILIM
SCL
SALRT
SDA
XTEMP
ZL2105
10µF
C
25
ZL2105
2.2µF
C
DD
100nF
PGND
PGND
VDDP
VDDP
C
BST
DR
CP2
SW
SW
VR
4.7µF
C
RA
19
27
26
25
24
23
22
21
20
F.B.*
47nF
C
91Ω
R
B
VR
4.7µF
C
R
100µF
C
IN
12V
V
IN
4.7µH
L
150µF
C
OUT
OUT
March 30, 2011
V
3.3V
OUT
FN6851.2