ADP34190091RMZR [ONSEMI]
Dual Bootstrapped, High Voltage MOSFET Driver with Output Disable; 双自举，高电压MOSFET驱动器输出禁用
| 型号： | ADP34190091RMZR |
| 厂家： | 
ONSEMI |
| 描述： | Dual Bootstrapped, High Voltage MOSFET Driver with Output Disable |
| 文件： | 总10页 (文件大小：143K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ADP3419
Dual Bootstrapped, High
Voltage MOSFET Driver
with Output Disable
The ADP3419 is a dual MOSFET driver optimized for driving two
N-channel switching MOSFETs in nonisolated synchronous buck
power converters used to power CPUs in portable computers. The
driver impedances have been chosen to provide optimum performance
in multiphase regulators at up to 25 A per phase. The high-side driver
can be bootstrapped relative to the switch node of the buck converter
and is designed to accommodate the high voltage slew rate associated
with floating high-side gate drivers.
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MSOP−10
CASE 846AC
1
The ADP3419 includes an anticross-conduction protection circuit,
undervoltage lockout to hold the switches off until the driver has
sufficient voltage for proper operation, a crowbar input that turns on
the low-side MOSFET independently of the input signal state, and a
low-side MOSFET disable pin to provide higher efficiency at light
loads. The SD pin shuts off both the high-side and the low-side
MOSFETs to prevent rapid output capacitor discharge during system
shutdown.
MARKING DIAGRAM
10
P9x
RYWG
G
The ADP3419 is specified over the extended commercial
temperature range of 0°C to 100°C and is available in a 10-lead MSOP
package.
1
P9x = Device Code
x = A or B
FEATURES
R
Y
W
G
= Assembly Location
= Year
= Work Week
• All-In-One Synchronous Buck Driver
• One PWM Signal Generates Both Drives
• Anticross-Conduction Protection Circuitry
• Output Disable Function
= Pb−Free Package
(Note: Microdot may be in either location)
• Crowbar Control
PIN ASSIGNMENT
• Synchronous Override Control
• Undervoltage Lockout
• Pb−Free Package is Available
1
2
3
4
5
10
9
IN
SD
BST
DRVH
SW
ADP3419
(Top View)
APPLICATIONS
8
DRVLSD
CROWBAR
VCC
• Mobile Computing CPU Core Power Converters
• Multiphase Desk-Note CPU Supplies
• Single-Supply Synchronous Buck Converters
• Non-Synchronous-to-Synchronous Drive Conversion
7
GND
DRVL
6
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
1
Publication Order Number:
April, 2010 − Rev. 3
ADP3419/D
ADP3419
VCC
5
BST
10
5V
VDC
1
2
9
8
DRVH
SW
IN
5
VCC
UVLO,
OVERLAP
PROTECTION,
SHUTDOWN
AND
CROWBAR
CIRCUITS
FROM CONTROLLER
1
2
3
IN
10
9
BST
SD
PWM OUTPUT
ADP3419
FROM SYSTEM
ENABLE CONTROL
DRVH
SW
V
SD
OUT
3
4
DRVLSD
FROM
CONTROLLER
8
6
DRVLSD
6
DRVL
CROWBAR
FROM CONTROLLER
CLAMP OUTPUT
4
CROWBAR DRVL
GND
7
ADP3419
7
GND
Figure 1. Simplified Block Diagram
Figure 2. General Application Circuit
ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
VCC
−0.3 to +7.0
−0.3 to +30
V
V
BST
BST to SW
−0.3 to +7.0
V
SW
−3.0 to +25
V
DRVH
SW −0.3 to BST +0.3
−0.3 to VCC +0.3
−0.3 to VCC +0.3
V
DRVL
V
All Other Inputs and Outputs
V
q
°C/W
JA
2-Layer Board
4-Layer Board
340
220
Operating Ambient Temperature Range
Junction Temperature Range
0 to 100
0 to 150
°C
°C
°C
°C
Storage Temperature Range
−65 to +150
Lead Temperature Range
Soldering (10 s)
300
215
220
Vapor Phase (60 s)
Infrared (15 s)
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
NOTE: This device is ESD sensitive. Use standard ESD precautions when handling.
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2
ADP3419
PIN ASSIGNMENT
Pin No.
Mnemonic
Description
1
IN
Logic Level PWM Input. This pin has primary control of the drive outputs. In normal operation, pulling
this pin low turns on the low-side driver; pulling it high turns on the high-side driver.
2
3
SD
Shutdown Input. When low, this pin disables normal operation, forcing DRVH and DRVL low.
DRVLSD
Synchronous Rectifier Shutdown Input. When low, DRVL is forced low; when high, DRVL is enabled
and controlled by IN and by the adaptive overlap protection control circuitry.
4
5
6
7
8
CROWBAR
VCC
Crowbar Input. When high, DRVL is forced high regardless of the high-side MOSFET switch condition.
Input Supply. This pin should be bypassed to GND with a 4.7 mF or larger ceramic capacitor.
Synchronous Rectifier Drive. Output drive for the lower (synchronous rectifier) MOSFET.
Ground. This pin should be closely connected to the source of the lower MOSFET.
DRVL
GND
SW
Switch Node Input. This pin is connected to the buck-switching node, close to the upper MOSFET’s
source. It is the floating return for the upper MOSFET drive signal. It is also used to monitor the
switched voltage to prevent turn-on of the lower MOSFET until the voltage is below ~1 V.
9
DRVH
BST
Buck Drive. Output drive for the upper (buck) MOSFET.
10
Upper MOSFET Floating Bootstrap Supply. A capacitor connected between the BST and SW pins
holds this bootstrapped voltage for the high-side MOSFET as it is switched.
ELECTRICAL CHARACTERISTICS V = SD = 5.0 V, BST = 4.0 V to 26 V. T = 0°C to 100°C, unless otherwise noted All limits at
CC
A
temperature extremes are guaranteed via correlation using standard statistical quality control (SQC) methods.
Parameter
Symbol
Conditions
Min
2.0
Typ
Max
Unit
LOGIC INPUTS (IN, SD, DRVLSD, CROWBAR)
Input Voltage High
V
IH
V
V
Input Voltage Low
V
IL
0.8
Input Current
I
Inputs = 0 V or 5.0 V
= 3 nF, Figure 3
−1.0
+1.0
mA
ns
IN
DRVLSD Propagation Delay Time
t
t
,
C
20
pdl DRVLSD
pdh DRVLSD
LOAD
HIGH-SIDE DRIVER
Output Resistance, Sourcing Current
Output Resistance, Sinking Current
Transition Times
BST − SW = 4.6 V
BST − SW = 4.6 V
1.7
0.8
3.3
2.3
W
W
t
BST − SW = 4.6 V, C
BST − SW = 4.6 V, C
= 3 nF, Figure 4
= 3 nF, Figure 4
14
11
35
25
ns
rDRVH
fDRVH
LOAD
LOAD
t
Propagation Delay Times (Note 1)
t
t
I
BST − SW = 4.6 V, C
BST − SW = 4.6 V, C
= 3 nF, Figure 4
= 3 nF, Figure 4
15
32
28
70
60
ns
pdhDRVH
pdlDRVH
LOAD
LOAD
t
LOW-SIDE DRIVER
Output Resistance, Sourcing Current
Output Resistance, Sinking Current
Transition Times
1.7
0.8
3.3
2.3
W
W
t
C
C
= 3 nF, Figure 4
= 3 nF, Figure 4
13
11
30
25
ns
rDRVL
fDRVL
LOAD
LOAD
t
Propagation Delay Times (Note 2)
C
C
= 3 nF, Figure 4
= 3 nF, Figure 4
25
16
48
30
ns
pdhDRVL
LOAD
LOAD
t
pdlDRVL
SW Transition Timeout (Note 1 and 2)
Zero-Crossing Threshold
SUPPLY
t
BST − SW = 4.6 V
150
4.6
350
1.0
600
6.0
ns
V
SWTO
V
ZC
Supply Voltage Range
V
CC
V
Supply Current
Normal Mode
I
I
+ I , IN = 0 V or 5.0 V
BST
0.8
325
1.5
600
mA
mA
SYS(NM)
CC
CC
BST
Shutdown Mode
I
+ I , SD = 0 V
SYS(SD)
Undervoltage Lockout Threshold
V
CC
V
CC
rising
falling
3.8
50
4.25
120
4.5
V
Undervoltage Lockout Hysteresis
(Note 3)
mV
1. For propagation delays, t
refers to the specified signal going high, and t refers to the signal going low with transitions measured at 50%.
pdl
pdh
2. The turn-on of DRVL is initiated after IN goes low by either SW crossing a ~1 V threshold or by expiration of t
3. Guaranteed by characterization, not production tested.
.
SWTO
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3
ADP3419
IN
2.0V
DRVLSD
0.8V
tpdhDRVLSD
tpdlDRVLSD
DRVL
Figure 3. Output Disable Timing Diagram
(Timing is Referenced to the 90% and 10% Points Unless Otherwise Noted)
IN
t
t
fDRVL
pdlDRVL
t
t
rDRVL
pdlDRVH
DRVL
t
fDRVH
t
t
pdhDRVH
rDRVH
DRVH−SW
V
V
TH
TH
SW
t
pdhDRVL
1V
ꢀ tSWTO
Figure 4. Non−Overlap Timing Diagram
(Timing is Referenced to the 90% and 10% Points Unless Otherwise Noted)
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4
ADP3419
TYPICAL CHARACTERISTICS
Figure 5. DRVH Rise and DRVL Fall Times
Figure 6. DRVH Fall and DRVL Rise Times
CH1 = IN, CH2 = DRVH, CH3 = DRVL
CH1 = IN, CH2 = DRVH, CH3 = DRVL
25
20
15
10
5
25
VCC = 5V
VCC = 5V
C
= 3nF
LOAD
C
= 3nF
LOAD
20
15
10
5
RISE TIME
FALLTIME
RISE TIME
FALLTIME
0
0
0
25
50
JUNCTION TEMPERATURE (°C)
75
100
125
0
25
50
JUNCTION TEMPERATURE (°C)
75
100
125
Figure 7. DRVH Rise and Fall Times vs.
Temperature
Figure 8. DRVL Rise and Fall Times vs.
Temperature
80
60
40
20
0
25
20
15
10
5
VCC = 5V
= 25°C
VCC = 5V
DRVH
T
A
T
= 25°C
A
DRVL
DRVH
DRVL
0
0
2
4
6
8
10
0
2
4
6
8
10
LOAD CAPACITANCE (nF)
LOAD CAPACITANCE (nF)
Figure 9. DRVH and DRVL Rise Times vs. Load
Capacitance
Figure 10. DRVH and DRVL Fall Times vs. Load
Capacitance
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ADP3419
TYPICAL CHARACTERISTICS
50
40
30
20
10
0
40
VCC = 5V
= 3nF
VCC = 5V
C
= 3nF
LOAD
tpdhDRVH
tpdlDRVH
C
LOAD
30
20
10
0
tpdhDRVL
tpdlDRVL
0
25
50
JUNCTION TEMPERATURE (°C)
75
100
125
0
25
50
JUNCTION TEMPERATURE (°C)
75
100
125
Figure 11. DRVH and DRVL tpdh vs. Temperature
Figure 12. DRVH and DRVL tpdl vs. Temperature
100
50
VCC = BST = 5V
VCC = 5V
C
= 3nF
LOAD
= 3nF
C
T
= 25°C
LOAD
T
A
80
60
40
20
0
40
30
20
10
0
= 25°C
A
0
1
2
3
4
5
0
200
400
600
800
1000
1200
INPUT VOLTAGE (V)
IN FREQUENCY (kHz)
Figure 13. IN Pin Input Current vs. Input Voltage
Figure 14. Supply Current vs. Frequency
1.5
VCC = 5V
C
= 3nF
LOAD
1.0
0.5
0
0
25
50
75
JUNCTION TEMPERATURE (°C)
100
125
Figure 15. Supply Current vs. Temperature
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ADP3419
Theory of Operation
High-Side Driver
The ADP3419 is a dual MOSFET driver optimized for
driving two N-channel MOSFETs in a synchronous buck
converter topology. A single PWM input signal is all that is
required to properly drive the high-side and the low-side
MOSFETs. Each driver is capable of driving a 3 nF load at
speeds up to 1 MHz. A more detailed description of the
ADP3419 and its features follows. Refer to the detailed
block diagram in Figure 16.
The high-side driver is designed to drive a floating low
R
N-channel MOSFET. The bias voltage for the
DS(ON)
high-side driver is developed by an external bootstrap supply
circuit, which is connected between the BST and SW pins.
The bootstrap circuit comprises a diode, D1, and bootstrap
capacitor, C . When the ADP3419 is starting up, the SW
BST
pin is at ground, so the bootstrap capacitor charges up to
VCC through D1. Once the supply voltage ramps up and
exceeds the UVLO threshold, the driver is enabled. When IN
goes high, the high-side driver begins to turn on the
5V
V
DCIN
D1
high-side MOSFET (Q1) by transferring charge from C
.
BST
VCC
5
As Q1 turns on, the SW pin rises up to V
, forcing the
DCIN
ADP3419
BST pin to V
+ V
, which is enough
UVLO
AND BIAS
DCIN
C(BST)
gate-to-source voltage to hold Q1 on. To complete the cycle,
Q1 is switched off by pulling the gate down to the voltage at
the SW pin. When the low-side MOSFET (Q2) turns on, the
SW pin is pulled to ground. This allows the bootstrap
capacitor to charge up to VCC again.
When the driver is enabled, the driver’s output is in phase
with the IN pin. Table 2 shows the relationship between
DRVH and the different control inputs of the ADP3419.
4
1
CROWBAR
IN
BST
10
9
R
BST
C
+
BST
DRVH
SW
Q1
OVERLAP
PROTECTION
AND
TIME−OUT
CIRCUIT
2
SD
8
6
VCC
Overlap Protection Circuit
DRVL
The overlap protection circuit prevents both main power
switches, Q1 and Q2, from being on at the same time. This
is done to prevent shoot-through currents from flowing
through both power switches and the associated losses that
can occur during their on-off transitions. The overlap
protection circuit accomplishes this by adaptively
controlling the delay from Q1’s turn-off to Q2’s turn-on, and
the delay from Q2’s turn-off to Q1’s turn-on.
To prevent the overlap of the gate drives during Q1’s
turn-off and Q2’s turn-on, the overlap circuit monitors the
voltage at the SW pin and DRVH pin. When IN goes low, Q1
begins to turn off. The overlap protection circuit waits for
the voltage at the SW and DRVH pins to both fall below
1.6 V. Once both of these conditions are met, Q2 begins to
turn on. Using this method, the overlap protection circuit
ensures that Q1 is off before Q2 turns on, regardless of
variations in temperature, supply voltage, gate charge, and
drive current. There is, however, a timeout circuit that
overrides the waiting period for the SW and DRVH pins to
reach 1.6 V. After the timeout period has expired, DRVL is
asserted high regardless of the SW and DRVH voltages. In
the opposite case, when IN goes high, Q2 begins to turn off
after a propagation delay. The overlap protection circuit
waits for the voltage at DRVL to fall below 1.6 V, after which
DRVH is asserted high and Q1 turns on.
Q2
DRVLSD
3
7
GND
Figure 16. Detailed Block Diagram of the ADP3419
Undervoltage Lockout
The undervoltage lockout (UVLO) circuit holds both
MOSFET driver outputs low during VCC supply ramp-up.
The UVLO logic becomes active and in control of the driver
outputs at a supply voltage of no greater than 1.5 V. The
UVLO circuit waits until the VCC supply has reached a
voltage high enough to bias logic level MOSFETs fully on
before releasing control of the drivers to the control pins.
Driver Control Input
The driver control input (IN) is connected to the duty ratio
modulation signal of a switch-mode controller. IN can be
driven by 2.5 V to 5.0 V logic. The output MOSFETs are
driven so that the SW node follows the polarity of IN.
Low-Side Driver
The low-side driver is designed to drive
ground-referenced low R N-channel synchronous
a
DS(ON)
rectifier MOSFET. The bias to the low-side driver is
internally connected to the VCC supply and GND. Once the
supply voltage ramps up and exceeds the UVLO threshold,
the driver is enabled. When the driver is enabled, the driver’s
output is 180° out of phase with the IN pin. Table 2 shows
the relationship between DRVL and the different control
inputs of the ADP3419.
Low-Side Driver Shutdown
The low-side driver shutdown DRVLSD allows a control
signal to shut down the synchronous rectifier. Under light
load conditions, DRVLSD should be pulled low before the
polarity reversal of the inductor current to maximize light
load conversion efficiency. DRVLSD can also be pulled low
for reverse voltage protection purposes.
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ADP3419
When DRVLSD is low, the low-side driver stays low.
When DRVLSD is high, the low-side driver is enabled and
controlled by the driver signals, as previously described.
4.7 mF multilayer ceramic (MLC) capacitor. MLC
capacitors provide the best combination of low ESR and
small size, and can be obtained from the following vendors.
Low-Side Driver Timeout
Table 2.
In normal operation, the DRVH signal tracks the IN signal
and turns off the Q1 high-side switch with a few 10 ns delay
Vendor
Murata
Part Number
GRM235Y5V106Z16
EMK325F106ZF
C23Y5V1C106ZP
Web Address
www.murata.com
www.t-yuden.com
www.tokin.com
(t
) following the falling edge of the input signal.
pdlDRVH
Taiyo-Yuden
Tokin
When Q1 is turned off, DRVL is allowed to go high, Q2 turns
on, and the SW node voltage collapses to zero. But in a fault
condition such as a high-side Q1 switch drain-source short
circuit, the SW node cannot fall to zero, even when DRVH
goes low. The ADP3419 has a timer circuit to address this
scenario. Every time the IN goes low, a DRVL on-time delay
timer is triggered. If the SW node voltage does not trigger a
low-side turn-on, the DRVL on-time delay circuit does it
Keep the ceramic capacitor as close as possible to the ADP3419.
Bootstrap Circuit
The bootstrap circuit uses a charge storage capacitor
(C ) and a Schottky diode (D1), as shown in Figure 16.
BST
Selection of these components can be done after the
high-side MOSFET has been chosen. The bootstrap
capacitor must have a voltage rating that is able to handle at
least 5.0 V more than the maximum supply voltage. The
capacitance is determined by:
instead, when it times out with t
delay. If Q1 is still
SW(TO)
turned on, that is, its drain is shorted to the source, Q2 turns
on and creates a direct short circuit across the V
rail. The crowbar action causes the fuse in the V
voltage
current
DCIN
DCIN
path to open. The opening of the fuse saves the load (CPU)
from potential damage that the high-side switch short circuit
could have caused.
QHSGATE
DVBST
CBST
+
(eq. 1)
where:
Q
DV
is the total gate charge of the high-side MOSFET.
is the voltage droop allowed on the high-side
Crowbar Function
HSGATE
In addition to the internal low-side drive time-out circuit,
the ADP3419 includes a CROWBAR input pin to provide a
means for additional overvoltage protection. When
CROWBAR goes high, the ADP3419 turns off DRVH and
turns on DRVL. The crowbar logic overrides the overlap
protection circuit, the shutdown logic, the DRVLSD logic,
and the UVLO protection on DRVL. Thus, the crowbar
function maximizes the overvoltage protection coverage in
the application. The CROWBAR can be either driven by the
CLAMP pin of buck controllers, such as the ADP3422,
ADP3203, ADP3204, or ADP3205, or controlled by an
independent overvoltage monitoring circuit.
BST
MOSFET drive.
For example, two IRF7811 MOSFETs in parallel have a
total gate charge of about 36 nC. For an allowed droop of
100 mV, the required bootstrap capacitance is 360 nF. A
good quality ceramic capacitor should be used, and derating
for the significant capacitance drop of MLCs at high
temperature must be applied. In this example, selection of
470 nF or even 1 mF would be recommended.
A Schottky diode is recommended for the bootstrap diode
due to its low forward drop, which maximizes the drive
available for the high-side MOSFET. The bootstrap diode
must also be able to handle at least 5.0 V more than the
maximum battery voltage. The average forward current can
be estimated by:
Table 1. ADP3419 Truth Table
CROWBAR UVLO SD DRVLSD IN DRVH DRVL
I
F(AVG) + QHSGATE fMAX
(eq. 2)
L
L
L
L
L
L
H
L
H
H
H
H
H
L
*
H
H
L
L
*
H
L
H
L
*
H
L
H
L
L
L
L
L
L
H
L
L
where f
controller.
is the maximum switching frequency of the
MAX
L
L
L
Power and Thermal Considerations
The major power consumption of the ADP3419-based
driver circuit is from the dissipation of MOSFET gate
charge. It can be estimated as:
L
L
L
*
*
L
H
*
*
*
H
H
P
MAX [ VCC (QHSGATE ) QLSGATE) fMAX
(eq. 3)
H
*
*
*
where:
* = Don’t Care.
VCC is the supply voltage 5.0 V.
f
Q
is the highest switching frequency.
MAX
Application Information
Supply Capacitor Selection
For the supply input (VCC) of the ADP3419, a local
bypass capacitor is recommended to reduce the noise and to
supply some of the peak currents drawn. Use a 10 mF or
and Q
are the total gate charge of high-side
HSGATE
LSGATE
and low-side MOSFETs, respectively.
For example, the ADP3419 drives two IRF7821 high-side
MOSFETs and two IRF7832 low-side MOSFETs. According
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8
ADP3419
to the MOSFET data sheets, Q
= 18.6 nC and
The total MOSFET drive power dissipates in the output
resistance of ADP3419 and in the MOSFET gate resistance
as well. η represents the ratio of power dissipation inside the
ADP3419 over the total MOSFET gate driving power. For
normal applications, a rough estimation for η is 0.7. A more
accurate estimation can be calculated using:
HSGATE
Q
= 68 nC. Given that f
is 300 kHz, P
would
LSGATE
MAX
MAX
be about 130 mW.
Part of this power consumption generates heat inside the
ADP3419. The temperature rise of the ADP3419 against its
environment is estimated as:
DT [ qJA PMAX h
(eq. 4)
where θ is ADP3419’s thermal resistance from junction
JA
to air, given in the absolute maximum ratings as 220°C/W
for a 4−layer board.
QHSGATE
HSGATE ) QLSGATE
0.5 R1
0.5 R2
ǒ
Ǔ
h [
)
Q
R1 ) RHSGATE ) R R2 ) RHSGATE
(eq. 5)
QLSGATE
HSGATE ) QLSGATE
0.5 R3
0.5 R4
ǒ
Ǔ
)
)
Q
R3 ) RLSGATE R4 ) RLSGATE
where:
• It is best to have the low-side MOSFET gate close to
the DRVL pin; otherwise, use a short and very thick
PCB trace between the DRVL pin and the low-side
MOSFET gate.
R1 and R2 are the output resistances of the high-side driver:
R1 = 1.7 (DRVH − BST), R2 = 0.8 (DRVH − SW).
R3 and R4 are the output resistances of the low-side driver:
R3 = 1.7 (DRVL − VCC), R4 = 0.8 (DRVL − GND).
R is the external resistor between the BST pin and the BST
capacitor.
• Fast switching of the high-side MOSFET can reduce
switching loss. However, EMI problems can arise due
to the severe ringing of the switch node voltage.
Depending on the character of the low-side MOSFET, a
very fast turn-on of the high-side MOSFET may falsely
turn on the low-side MOSFET through the dv/dt
coupling of its Miller capacitance. Therefore, when fast
turn-on of the high-side MOSFET is not required by the
application, a resistor of about 1 W to 2 W can be placed
between the BST pin and the BST capacitor to limit the
turn-on speed of the high-side MOSFET.
R
and R
are gate resistances of high-side and
HSGATE
LSGATE
low-side MOSFETs, respectively.
Assuming that R = 0 and that R
Equation 5 gives a value of η = 0.71. Based on Equation 4,
the estimated temperature rise in this example is about 22°C.
= R
= 0.5,
HSGATE
LSGATE
PC Board Layout Considerations
Use the following general guidelines when designing
printed circuit boards. Figure 17 gives an example of the
typical land patterns based on the guidelines given here.
D1
• The VCC bypass capacitor should be located as close as
possible to the VCC and GND pins. Place the
ADP3419 and bypass capacitor on the same layer of the
board, so that the PCB trace between the ADP3419
VCC pin and the MLC capacitor does not contain any
via. An ideal location for the bypass MLC capacitor is
near Pin 5 and Pin 6 of the ADP3419.
C
R
BST
BST
TO SWITCH
NODE
• High frequency switching noise can be coupled into the
SHORT, THICK TRACE
TO THE GATES OF
LOW-SIDE MOSFETS
VCC pin of the ADP3419 via the BST diode.
Therefore, do not connect the anode of the BST diode
to the VCC pin with a short trace. Use a separate via or
trace to connect the anode of the BST diode directly to
the VCC 5.0 V power rail.
C
VCC
Figure 17. External Component Placement Example
ORDERING INFORMATION
†
Device Number
ADP3419JRM−REEL
Branding
Package Type
Shipping
P9A
P9B
P9B
10−Lead MSOP
10−Lead MSOP
10−Lead MSOP
3000 Tape & Reel
3000 Tape & Reel
3000 Tape & Reel
ADP3419JRMZ−REEL
ADP34190091RMZR
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*The “Z’’ suffix indicates Pb−Free part.
http://onsemi.com
9
ADP3419
PACKAGE DIMENSIONS
MSOP10
CASE 846AC−01
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
−A−
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION “A” DOES NOT INCLUDE MOLD
FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE
BURRS SHALL NOT EXCEED 0.15 (0.006)
PER SIDE.
4. DIMENSION “B” DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION
SHALL NOT EXCEED 0.25 (0.010) PER SIDE.
5. 846B−01 OBSOLETE. NEW STANDARD
846B−02
−B−
K
G
PIN 1 ID
D 8 PL
M
S
S
A
0.08 (0.003)
T B
MILLIMETERS
INCHES
DIM MIN
MAX
3.10
3.10
MIN
MAX
0.122
0.122
0.043
0.012
A
B
C
D
G
H
J
2.90
2.90
0.95
0.20
0.114
0.114
1.10 0.037
0.30 0.008
0.50 BSC
0.020 BSC
0.05
0.10
4.75
0.40
0.15 0.002
0.21 0.004
5.05 0.187
0.70 0.016
0.006
0.008
0.199
0.028
C
0.038 (0.0015)
K
L
−T−
SEATING
PLANE
L
H
J
SOLDERING FOOTPRINT*
1.04
0.041
0.32
0.0126
10X
10X
3.20
4.24
5.28
0.126
0.167 0.208
0.50
mm
inches
ǒ
Ǔ
8X0.0196
SCALE 8:1
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5773−3850
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
For additional information, please contact your local
Sales Representative
ADP3419/D
相关型号：
ADP3421JRUZ-REEL7
IC SWITCHING CONTROLLER, PDSO28, TSSOP-28, Switching Regulator or Controller
ONSEMI
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