ADP5033ACBZ-1-R7 Analog Devices Inc, ADP5033ACBZ-1-R7 Datasheet - Page 21

• Manufacturer Part Number: ADP5033ACBZ-1-R7
• Description: IC REG QD SYNC BUCK/LDO1 16WLCSP
• Manufacturer: Analog Devices Inc
• Series: -r

Specifications of ADP5033ACBZ-1-R7

• Topology: Step-Down (Buck) Synchronous (2), Linear (LDO) (2)
• Function: Any Function
• Number Of Outputs: 4
• Frequency - Switching: 3MHz
• Voltage/current - Output 1: 0.8 V ~ 3.3 V, 800mA
• Voltage/current - Output 2: 0.8 V ~ 3.3 V, 800mA
• Voltage/current - Output 3: 0.8 V ~ 3.3 V, 300mA
• W/led Driver: No
• W/supervisor: No
• W/sequencer: No
• Voltage - Supply: 1.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-WFBGA, WLCSP
• No. Of Outputs: 4
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +125°C
• Supply Voltage: 5.5V
• No. Of Step-down Dc - Dc Converters: 2
• No. Of Ldo Regulators: 2
• Digital Ic Case Style: WLCSP
• No. Of Regulated Outputs: 2
• Rohs Compliant: Yes
• Primary Input Voltage: 5.5V
• Output Voltage: 2.8V
• Output Current: 800mA
• Switching Frequency Max: 3MHz
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: ADP5033ACBZ-1-R7TR

The peak-to-peak output voltage ripple for the selected output
capacitor and inductor values is calculated using the following
equation:
Capacitors with lower equivalent series resistance (ESR) are
preferred to guarantee low output voltage ripple, as shown in
the following equation:
Table 9. Suggested 10 μF Capacitors
Vendor
Murata
Taiyo Yuden
TDK
Panasonic
V
ESR
RIPPLE
COUT
=
≤
(
2
V
π
I
RIPPLE
RIPPLE
×
f
SW
)
V
×
IN
2
×
L
×
Type
X5R
X5R
X5R
X5R
C
OUT
=
8
×
f
I
SW
RIPPLE
×
Model
GRM188R60J106
JMK107BJ475
C1608JB0J106K
ECJ1VB0J106M
C
OUT
Rev. 0 | Page 21 of 28
The effective capacitance needed for stability, which includes
temperature and dc bias effects, is a minimum of 7 μF and a
maximum of 40 μF.
The buck regulators require 10 μF output capacitors to guaran-
tee stability and response to rapid load variations and to
transition into and out of the PWM/PSM modes. In certain
applications, where one or both buck regulators power a
processor, the operating state is known because it is controlled
by software. In this condition, the processor can drive the
MODE pin according to the operating state; consequently, it is
possible to reduce the output capacitor from 10 μF to 4.7 μF
because the regulator does not expect a large load variation
when working in PSM mode (see Figure 47).
Case Size
0603
0603
0603
0603
Voltage Rating (V)
6.3
6.3
6.3
6.3
ADP5033