NCP6336BS
Configurable 5.0 A Step
Down Converter - Transient
Load Helper
The NCP6336BS is a synchronous buck converter optimized to
supply the different sub systems of portable applications powered by
one cell Li−Ion or three cell Alkaline/NiCd/NiMH batteries. The
device is able to deliver up to 5.0 A, with programmable output
voltage from 0.6 V to 1.4 V. It can share the same output rail with
another DC−to−DC converter and works as a transient load helper.
Operation at a 2.74 MHz switching frequency allows the use of small
components. Synchronous rectification and automatic PWM/PFM
transitions improve overall solution efficiency. The NCP6336BS is in
a space saving, low profile 2.0 x 1.6 mm CSP−20 package.
Features
www.onsemi.com
MARKING
DIAGRAM
WLCSP20
CASE 568AG
6336Bx
AWLYWW
G
•
Input Voltage Range from 2.3 V to 5.5 V: Battery and 5 V Rail
•
•
•
•
•
•
•
•
•
•
•
Powered Applications
Programmable Output Voltage: 0.6 V to 1.4 V in 6.25 mV Steps
2.74 MHz Switching Frequency with On Chip Oscillator
Uses 330 nH Inductor and 47
mF
Capacitors for Optimized Footprint
and Solution Thickness
PFM/PWM Operation for Optimum Increased Efficiency
Low 35
mA
Quiescent Current
I
2
C Control Interface with Interrupt and Dynamic Voltage Scaling
Support
Enable Pins, Power Good / Fail Signaling
Thermal Protections and Temperature Management
Transient Load Helper: Share the Same Rail with Another Rail
Small 2.0 x 1.6 mm / 0.4 mm Pitch CSP Package
These are Pb−Free Devices
x
A
WL
Y
WW
G
= S or N
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
Pb−Free indicator, G or microdot (G), may or may
not be present
PIN OUT
1
A
PG
2
EN
3
SCL
4
FB
B
SDA
PGND
INTB*
AGND
AGND
C
PGND
PGND
PGND
PGND
Typical Applications
•
Smartphones
•
Webtablets
D
AVIN
PVIN
SW
SW
NCP6336BS
AGND
B3
B4
E
D1
D2
E1
E2
PVIN
PVIN
SW
SW
AVIN
PVIN
4.7 uF
Supply Input
Core
Thermal
Protection
(Top View)
*Optional
Enable Control EN
Input
A2
Operating
Mode
Control
DCDC
5.0 A
D3
D4
E3
E4
SW
330 nH
ORDERING INFORMATION
See detailed ordering and shipping information on page 28 of
this data sheet.
47 uF
Power Fail PGND
PG
Interrupt PGND
INTB
SDA
Processor I
@
C
Control Interface SCL
A1
Output
Monitoring
C1
C2
C3
C4
PGND
B2
B1
I@C
DCDC
2.74 MHz
Controller
A4
FB
Sense
Processor
Core
A3
Figure 1. Typical Application Circuit
©
Semiconductor Components Industries, LLC, 2016
1
January, 2016 − Rev. 0
Publication Order Number:
NCP6336BS/D
NCP6336BS
PVIN
PVIN
PVIN
SUPPLY INPUT
ANALOG GROUND
POWER
INPUT
AVIN
AGND
Core
5.0 A
DC−DC
SW
SW
SW
SW
Thermal
Protection
POWER GOOD
(optional)
SWITCH
NODE
PG
Output Voltage
Monitoring
ENABLE CONTROL INPUT
EN
Operating
Mode Control
2.74 MHz DC−DC
converter
Controller
PGND
PGND
PGND
PGND
FB
POWER
GROUND
INTERRUPT OUTPUT
(optional)
PROCESSOR I C
CONTROL INTERFACE
2
INTB
SCL
SDA
Logic Control
Interrupt
I2C
Sense
FEEDBACK
Figure 2. Simplified Block Diagram
www.onsemi.com
2
NCP6336BS
1
2
3
4
A
PG
EN
SCL
FB
B
SDA
PGND
INTB*
AGND
AGND
C
PGND
PGND
PGND
PGND
D
AVIN
PVIN
SW
SW
E
PVIN
PVIN
SW
SW
*Optional
Figure 3. Pin Out (Top View)
PIN FUNCTION DESCRIPTION
Pin
REFERENCE
D1
AVIN
Analog Input
Analog Supply.
This pin is the device analog and digital supply. Could be connected
directly to the VIN plane just next to the 4.7
mF
PVIN capacitor or to a dedicated
1.0
mF
ceramic capacitor. Must be equal to PVIN.
Analog Ground.
Analog and digital modules ground. Must be connected to the sys-
tem ground.
Name
Type
Description
B3, B4
AGND
Analog Ground
CONTROL AND SERIAL INTERFACE
A2
A3
B1
A1
B2
EN
SCL
SDA
PGND
PG
PGND
INTB
Digital Input
Digital Input
Digital
Input/Output
Digital Output
Analog Ground
Digital Output
Analog Ground
Enable Control.
Active high will enable the part. There is an internal pull down resist-
or on this pin.
I
2
C interface
Clock
line. There is an internal pull down resistor on this pin; could be
left open if not used
I
2
C interface Bi−directional
Data
line. There is an internal pull down resistor on this
pin; could be left open if not used
Power Good
open drain output. If not used has to be connected to ground plane
Interrupt
open drain output. If not used has to be connected to ground plane
DC to DC CONVERTER
D2, E1, E2
PVIN
Power Input
Switch Supply.
These pins must be decoupled to ground by a 4.7
mF
ceramic capa-
citor. It should be placed as close as possible to these pins. All pins must be used
with short heavy connections. Must be equal to AVIN.
Switch Node.
These pins supply drive power to the inductor. Typical application uses
0.33
mH
inductor; refer to application section for more information.
All pins must be used with short heavy connections.
Switch Ground.
This pin is the power ground and carries the high switching current.
High quality ground must be provided to prevent noise spikes. To avoid high−density
current flow in a limited PCB track, a local ground plane that connects all PGND pins
together is recommended. Analog and power grounds should only be connected
together in one location with a trace.
Feedback Voltage input.
Must be connected to the output capacitor positive termin-
al with a trace, not to a plane. This is the positive input to the error amplifier.
D3, D4,
E3, E4
C1, C2,
C3, C4
SW
Power Output
PGND
Power Ground
A4
FB
Analog Input
www.onsemi.com
3
NCP6336BS
MAXIMUM RATINGS
Rating
Analog and power pins: AVIN, PVIN, SW, PG, INTB, FB (Note 1)
Digital pins: SCL, SDA, EN Pins:
Input Voltage
Input Current
Human Body Model (HBM) ESD Rating (Note 2)
Charged Device Model (CDM) ESD Rating (Note 2)
Latch Up Current: (Note 3)
Digital Pins
All Other Pins
Storage Temperature Range
Maximum Junction Temperature
Moisture Sensitivity (Note 4)
Symbol
V
A
V
DG
I
DG
ESD HBM
ESD CDM
I
LU
10
100
T
STG
T
JMAX
MSL
−65 to +150
−40 to +150
Level 1
°C
°C
Value
−0.3 to + 6.0
−0.3 to V
A
+ 0.3
≤
6.0
10
2500
1250
Unit
V
V
mA
V
V
mA
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Refer to ELECTRICAL CHARACTERISTICS, RECOMMENDED OPERATING RANGES and/or APPLICATION INFORMATION for Safe
Operating parameters.
2. This device series contains ESD protection and passes the following ratings:
Human Body Model (HBM)
±
2.5 kV per JEDEC standard: JESD22−A114.
Charged Device Model (CDM)
±
1250 V per JEDEC standard: JESD22−C101 Class IV
3. Latch up Current per JEDEC standard: JESD78 class II.
4. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020A.
OPERATING CONDITIONS
Symbol
AV
IN,
PV
IN
T
A
T
J
R
qJA
P
D
P
D
L
Co
Cin
Power Supply
Ambient Temperature Range
Junction Temperature Range (Note 6)
Thermal Resistance Junction to Ambient (Note 7)
Power Dissipation Rating (Note 8)
Power Dissipation Rating (Note 8)
Inductor for DC to DC converter (Note 5)
Output Capacitor for DC to DC Converter (Note 5)
Input Capacitor for DC to DC Converter (Note 5)
CSP−20 on Demo−board
T
A
≤
85°C
T
A
= 65°C
Parameter
Conditions
AV
IN
= PV
IN
Min
2.3
−40
−40
−
−
−
0.26
30
4.7
Typ
−
25
25
55
727
1090
0.33
−
−
Max
5.5
+85
+125
−
−
−
0.56
150
−
Unit
V
°C
°C
°C/W
mW
mW
mH
mF
mF
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
5. Including de−ratings (Refer to the Application Information section of this document for further details)
6. The thermal shutdown set to 150°C (typical) avoids potential irreversible damage on the device due to power dissipation.
7. The R
qJA
is dependent of the PCB heat dissipation. Board used to drive this data was a NCP6336EVB board. It is a multilayer board with
1−ounce internal power and ground planes and 2−ounce copper traces on top and bottom of the board.
8. The maximum power dissipation (P
D
) is dependent by input voltage, maximum output current and external components selected.
R
qJA
+
125
*
T
A
P
D
www.onsemi.com
4
NCP6336BS
ELECTRICAL CHARACTERISTICS
(Note 9)
Min and Max Limits apply for T
A
= −40°C to +85°C, AVIN = PVIN = 3.6 V and default configuration, unless otherwise specified.
Typical values are referenced to T
A
= +25°C, AVIN = PVIN = 3.6 V and default configuration, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
SUPPLY CURRENT: PINS AVIN – PVINx
I
Q PWM
I
Q PFM
I
SLEEP
Operating quiescent current PWM
Operating quiescent current PFM
Product sleep mode current
DCDC active in Forced PWM
no load
DCDC active in Auto mode
no load − minimal switching
EN high, DCDC off or
EN low and Sleep_Mode high
V
IN
= 2.5 V to 5.5 V
EN and Sleep_Mode low
V
IN
= 2.5 V to 5.5 V
−
−
−
17
35
7
23
70
15
mA
mA
mA
I
OFF
Product in off mode
−
0.8
5
mA
DC to DC CONVERTER
PV
IN
I
OUTMAX
Input Voltage Range
Maximum Output Current
Ipeak[1..0] = 00 (Note 11)
Ipeak[1..0] = 01 (Note 11)
Ipeak[1..0] = 10 (Note 11)
Ipeak[1..0] = 11 (Note 11)
D
VOUT
Output Voltage DC Error
Forced PWM mode, No load
Forced PWM mode, V
IN
range,
I
OUT
up to I
OUTMAX
(Note 11)
Auto mode, V
IN
range,
I
OUT
up to I
OUTMAX
(Note 11)
F
SW
R
ONHS
R
ONLS
I
PK
Switching Frequency
P−Channel MOSFET On
Resistance
N−Channel MOSFET On
Resistance
Peak Inductor Current
From PVIN to SW
V
IN
= 5.0 V
From SW to PGND
V
IN
= 5.0 V
Open loop – Ipeak[1..0] = 00 (Note 11)
Open loop – Ipeak[1..0] = 01 (Note 11)
Open loop – Ipeak[1..0] = 10 (Note 11)
Open loop – Ipeak[1..0] = 11
DC
LOAD
DC
LINE
Load Regulation
Line Regulation
I
OUT
from 0 A to I
OUTMAX
(Note 11)
Forced PWM mode
I
OUT
= 3 A
2.3 V
≤
V
IN
≤
5.5 V (Note 11)
Forced PWM mode
tr = ts = 100 ns
Load step 1.2 A (Note 11)
2.3
3.5
4.0
4.5
5.0
−1
−1
−1
2.46
−
−
−
−
−
6.1
−
−
−
−
−
−
−
−
−
−
2.74
23
12
5.2
5.8
6.2
6.8
−0.2
0
5.5
−
−
−
−
1
1
2
3.01
40
20
−
−
−
7.8
−
−
%/A
%
MHz
mW
mW
A
%
V
A
AC
LOAD
D
t
START
Transient Load Response
Maximum Duty Cycle
Turn on time
−
−
±40
100
100
−
−
125
mV
%
ms
Time from EN transitions from Low to
High to 90% of Output Voltage
(DELAY[2..0] = 000b)
V
OUT
= 0.9 V
−
R
DISDCDC
DCDC Active Output Discharge
−
25
35
W
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
9. Refer to the Application Information section of this data sheet for more details.
10. Devices that use non−standard supply voltages which do not conform to the intent I
2
C bus system levels must relate their input levels
to the V
DD
voltage to which the pull−up resistors R
P
are connected.
11. Guaranteed by design and characterized.
www.onsemi.com
5
京公网安备 11010802033920号
EEWORLD
