SHENZHENFREESCALE AO4476

Freescale
AO4476 /MC4476
N-Channel 30-V (D-S) MOSFET
These miniature surface mount MOSFETs utilize a
high cell density trench process to provide low
rDS(on) and to ensure minimal power loss and heat
dissipation. Typical applications are DC-DC
converters and power management in portable and
battery-powered products such as computers,
printers, PCMCIA cards, cellular and cordless
telephones.
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PRODUCT SUMMARY
VDS (V)
rDS(on) m(Ω)
13.5 @ VGS = 10V
30
20 @ VGS = 4.5V
Low rDS(on) provides higher efficiency and
extends battery life
Low thermal impedance copper leadframe
SOIC-8 saves board space
Fast switching speed
High performance trench technology
ID (A)
13
11
8
1
2
7
3
6
4
5
o
ABSOLUTE MAXIMUM RATINGS (TA = 25 C UNLESS OTHERWISE NOTED)
Symbol
Limit
Units
Parameter
VDS
30
Drain-Source Voltage
V
±20
VGS
Gate-Source Voltage
o
TA=25 C
a
Continuous Drain Current
o
TA=70 C
b
Pulsed Drain Current
a
Continuous Source Current (Diode Conduction)
±13
ID
IDM
±50
IS
2.3
o
TA=25 C
a
Power Dissipation
o
TA=70 C
THERMAL RESISTANCE RATINGS
Parameter
a
Maximum Junction-to-Case
a
Maximum Junction-to-Ambient
t <= 5 sec
t <= 5 sec
RθJC
RθJA
W
2.2
TJ, Tstg
Symbol
A
3.1
PD
Operating Junction and Storage Temperature Range
A
±11
o
C
-55 to 150
Maximum
25
50
Units
o
o
C/W
C/W
Notes
a.
Surface Mounted on 1” x 1” FR4 Board.
b.
Pulse width limited by maximum junction temperature
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AO4476 /MC4476
SPECIFICATIONS (TA = 25oC UNLESS OTHERWISE NOTED)
Parameter
Symbol
Test Conditions
VGS(th)
IGSS
VDS = VGS, ID = 250 uA
Min
Limits
Unit
Typ Max
Static
Gate-Threshold Voltage
Gate-Body Leakage
Zero Gate Voltage Drain Current
IDSS
On-State Drain CurrentA
ID(on)
A
Drain-Source On-Resistance
rDS(on)
Forward TranconductanceA
Diode Forward Voltage
gfs
VSD
1
VDS = 0 V, VGS = 20 V
±100
VDS = 24 V, VGS = 0 V
1
25
VDS = 24 V, VGS = 0 V, TJ = 55oC
VDS = 5 V, VGS = 10 V
VGS = 10 V, ID = 10 A
VGS = 4.5 V, ID = 8 A
VDS = 15 V, ID = 10 A
IS = 2.3 A, VGS = 0 V
20
V
nA
uA
A
13.5
20
40
0.7
mΩ
S
V
b
Dynamic
Total Gate Charge
Gate-Source Charge
Gate-Drain Charge
Input Capacitance
Output Capacitance
Reverse Transfer Capacitance
Turn-On Delay Time
Rise Time
Turn-Off Delay Time
Fall-Time
Qg
Qgs
Qgd
Ciss
Coss
Crss
td(on)
tr
td(off)
tf
VDS = 15 V, VGS = 4.5 V,
ID = 10 A
VDS = 15 V, VGS = 0 V,
f = 1MHz
VDD = 25 V, RL = 25 Ω , ID = 1 A,
VGEN = 10 V
12.5
2.6
4.6
1191
412
160
20
9
70
20
nC
pF
nS
Notes
a.
Pulse test: PW <= 300us duty cycle <= 2%.
b.
Guaranteed by design, not subject to production testing.
FREESCALE reserves the right to make changes without further notic e to any products hereinfreescale makes no warranty, representation
or guarantee regarding the suitability of its products for any particular purpose, nor does freescale assume any liability arising ou t 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 infreescale data sheet s 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. freescale does not convey any license under its patent rights nor the rights of others. freescale 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 freescale product could create a situation where personal injury or death may occur.
Should Buyer purchase or use freescale products for any such uninte nded or unauthorized application, Buyer shall indemnify and holdfreescale 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 freescale was negligent regarding the design or m anufacture of the part. freescale is an Equal Opportunity/Affirmative Action Employer.
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AO4476 /MC4476
ID, DRAIN CURRENT (A)
50
RDS(ON), NORMALIZED
DRAIN-SOURCE ON-RESISTANCE
Typical Electrical Characteristics (N-Channel)
VGS = 10V
6.0V
40
4.0V
30
20
3.0V
10
0
0
0.5
1
1.5
2
2
1.7
1.4
4.5V
6.0V
1.1
10V
0.8
0.5
0
VDS, DRAIN-SOURCE VOLTAGE (V)
10
20
30
40
50
ID, DRAIN CURRENT (A)
Figure 1. On-Region Characteristics
Figure 2. On-Resistance with Drain Current
1.6
ID = 10A
RDS(ON), ON-Resistance
(OHM )
Normalized RDS(on)
0.05
VGS = 10V
I D = 10A
1.4
1.2
1.0
0 .8
0 .6
-50
-2 5
0
25
50
75
10 0
12 5
150
0.04
0.03
0.02
o
T A = 25 C
0.01
0
2
T J Juncat ion T emperature (C)
4
6
8
10
VGS, Gate To Source Voltage (V)
Figure 3. On-Resistance Variation with Temperature
Figure 4. On-Resistance Variation with
Gate to Source Voltage
60
VD=5V
100
-55C
IS, REVERSE DRAIN CURRENT (A)
I D Drain Current (A)
50
25C
40
30
125C
20
10
0
0
1
2
3
4
5
6
VGS = 0V
10
o
TA = 125 C
1
0.1
o
25 C
0.01
0.001
0.0001
VGS Ga te to S o urc e Vo lta ge (V)
0
0.2
0.4
0.6
0.8
1
1.2
VSD, BODY DIODE FORWARD VOLTAGE (V)
Figure 5. Transfer Characteristics
Figure 6. Body Diode Forward Voltage Variation
with Source Current and Temperature
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AO4476 /MC4476
Typical Electrical Characteristics (N-Channel)
10
1600
CAPACITANCE (pF)
Vgs Voltage ( V )
8
6
4
2
f = 1MHz
VGS = 0 V
Ciss
1200
800
Coss
400
Crss
0
0
0
4
8
12
16
20
24
28
0
5
10
15
20
25
30
Qg, Gate Charge (nC)
VDS, DRAIN TO SOURCE VOLTAGE (V)
Figure 8. Capacitance Characteristics
50
2.4
SINGLE PULSE
RqJA = 125C/W
TA = 25C
VDS = VGS
2.2
P(pk), Peak Transient Power (W)
Vth, Gate-Source Thresthold Voltage
(V)
Figure 7. Gate Charge Characteristics
ID = 250mA
2
1.8
1.6
1.4
1.2
1
-50 -25
0
25
50
75 100 125 150 175
o
TA, AMBIENT TEMPERATURE ( C)
40
30
20
10
0
0.001
0.01
0.1
1
10
100
t1, TIME (sec)
Figure 9. Threshold Vs Ambient Temperature
Figure 10. Single Pulse Maximum Power Dissipation
Normalized Thermal Transient Junction to Ambient
1
D = 0.5
RqJA(t) = r(t) * RqJA
RqJA = 125 C/W
0.2
0.1
0.1
0.05
P(pk)
0.02
t1
0.01
t2
0.01
TJ - TA = P * RqJA(t)
Duty Cycle, D = t1 / t2
SINGLE PULSE
0.001
0.0001
0.001
0.01
0.1
1
10
100
1000
t1, TIME (sec)
Square Wave Pulse Duration (S)
Figure 11. Transient Thermal Response Curve
4
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AO4476 /MC4476
Package Information
SO-8: 8LEAD
H x 45°
5
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