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| PTH04T220W Datasheet, PDF (6/39 Pages) Texas Instruments – 16-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TURBOTRANS | |||
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PTH04T220W, PTH04T221W
SLTS275A â DECEMBER 2006 â REVISED FEBRUARY 2007
www.ti.com
ELECTRICAL CHARACTERISTICS
PTH04T221W (Ceramic Capacitors)
TA = 25°C, VI = 5 V, VO = 3.3 V, CI = 300 µF ceramic, CO = 300 µF ceramic, and IO = IO max (unless otherwise stated)
PARAMETER
TEST CONDITIONS
PTH04T221W
UNIT
MIN TYP
MAX
IO
Output current
VI
Input voltage range
Over VO range
Over IO range
25°C, natural convection
0
0.69 ⤠VO⤠1.7
2.2
1.7 < VO⤠3.6 VO+0.5(1)
VOADJ
Output voltage adjust range
Over IO range
0.69
Set-point voltage tolerance
Temperature variation
â40°C < TA < 85°C
VO
Line regulaltion
Load regulation
Total output variation
η
Efficiency
Over VI range
Over IO range
Includes set-point, line, load, â40°C ⤠TA ⤠85°C
RSET = 1.21 kâ¦, VO = 3.3 V
RSET = 2.38 kâ¦, VO = 2.5 V
RSET = 4.78 kâ¦, VO = 1.8 V
IO = 16 A
RSET = 7.09 kâ¦, VO = 1.5 V
RSET = 12.1 kâ¦, VO = 1.2 V
RSET = 20.8 kâ¦, VO = 1.0 V
RSET = 689 kâ¦, VO = 0.7 V
VO Ripple (peak-to-peak)
ILIM
Overcurrent threshold
20-MHz bandwidth
Reset, followed by auto-recovery
ttr
âVtr
ttrTT
âVtrTT
Transient response
2.5 A/µs load step
50 to 100% IOmax
VO = 2.5 V
w/o TurboTrans
CO= 300 µF, Type A
w/ TurboTrans
CO= 2000 µF, Type A
RTT = short
Recovery time
VO over/undershoot
Recovery time
VO over/undershoot
IIL
Track input current (pin 9)
dVtrack/dt Track slew rate capability
Pin to GND
CO ⤠CO (max)
UVLOADJ
Adjustable Under-voltage lockout
(pin 10)
VI increasing, RUVLO = OPEN
Vi decreasing, RUVLO = OPEN
Hysteresis, RUVLO = OPEN
1.30
Input high voltage (VIH)
Inhibit control (pin 10)
Input low voltage (VIL)
-0.2
Input low current (IIL ), Pin 10 to GND
II
Input standby current
Inhibit (pin 10) to GND, Track (pin 9) open
fs
Switching frequency
Over VI and IO ranges, SmartSync (pin 11) to GND
fSYNC
Synchronization (SYNC)
frequency
240
±0.5
±0.3
±3
±2
94
91
88
87
84
82
76
20
32
60
145
220
50
1.95
1.50
0.5
-235
5
300
16
5.5
5.5
3.6
±1 (2)
±1.5 (2)
â130 (3)
1
2.19
Open (4)
0.8
A
V
V
%Vo
%Vo
mV
mV
%Vo
mVPP
A
µs
mV
µs
mV
µA
V/ms
V
V
µA
mA
kHz
400 kHz
VSYNCH
VSYNCL
tSYNC
CI
SYNC High-Level Input Voltage
SYNC Low-Level Input Voltage
SYNC Minimum Pulse Width
External input capacitance
2
Ceramic
200
300 (5)
5.5
V
0.8
V
ns
µF
(1) The minimum input voltage is 2.2 V or (VO + 0.5) V, whichever is greater.
(2) The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a
tolerance of 1% with 100 ppm/°C or better temperature stability. .
(3) A low-leakage (<100 nA), open-drain device, such as MOSFET or voltage supervisor IC, is recommended to control pin 9. The
open-circuit voltage is less than VI.
(4) This control pin has an internal pull-up. Do not place an external pull-up on this pin. If it is left open-circuit, the module operates when
input power is applied. A small, low-leakage (<100 nA) MOSFET is recommended for control. The open-circuit voltage is less than
3.5 Vdc. For additional information, see the related application note.
(5) 300 µF of ceramic input capacitance is required for proper operation.
6
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