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PDF TS33000 Data sheet ( Hoja de datos )
| Número de pieza | TS33000 | |
| Descripción | High Efficiency Synchronous DC/DC Buck Converter | |
| Fabricantes | Semtech | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TS33000 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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TS33000
High Efficiency Synchronous
DC/DC Buck Converter
TRIUNE PRODUCTS
Features
• Fixed Output option has automatic low power PFM mode
for reduced quiescent current at light loads
• 2.25MHz +/- 10% fixed switching frequency
• Fixed output voltages: 0.8V, 0.9V, 1.2V, 1.5V, 1.8V,
• 2.5V, and 3.3V with +/- 2% output tolerance
• Input voltage range: 2.0V to 5.5V
• Voltage mode PWM control with input voltage feed-
• forward compensation
• Voltage supervisor for VOUT reported at the PG pin
• Input supply under voltage lockout
• Soft start for controlled startup with no overshoot
• Full protection for over-current, over-temperature,
• and VOUT overvoltage
• Less than 100nA in shutdown mode
• Multiple enable pins for flexible system sequencing
• Low external component count
• Junction operating temperature -40C to 125C
• Packaged in a 16 pin QFN (3x3)
Applications
• Point of load
• Systems with deep submicron ASICs/FPGAs
• Set-top box
• Communications equipment
• Portable and handheld equipment
Description
The TS33000 is a DC/DC synchronous switching regulator
with fully integrated power switches, internal compensation,
and full fault protection. The switching frequency of 2.25MHz
enables the use of extremely small filter components, resulting
in smaller board space and reduced BOM costs.
When the input current is greater than approximately 50mA,
the TS33000 utilizes PWM voltage mode feedback with input
voltage feed-forward to provide a wide input voltage range
without the need for external compensation.
For the Fixed Output option, when the input current is less
than 50mA, the device uses a PFM mode to provide increased
efficiency at light loads. The cross over between PFM mode
and PWM is automatic and has hysteresis to prevent oscillation
between the modes. Additionally, the nLP mode pin can be
used to force the device into PWM mode to reduce the output
ripple, if needed (Fixed Output only).
The TS33000 integrates a wide range of protection circuitry;
including input supply under-voltage lockout, output under-
voltage, output over-voltage, soft start, high side FET and low
side FET current limits, and thermal shutdown.
Typical Applications
VCC
nLP
EN
Fixed Output
VCC
2x4.7uF
VSW
VOUT
Sense
FB
nLP
EN
PG
1.5uH
VOUT
4.7uF
VCC or VOUT
10 kohm
(optional)
PG
TS33000
Final Datasheet
May 1, 2015
Rev 1.9
www.semtech.com
1 of 17
Semtech
1 page  
Characteristics
Electrical characteristics, TJ = -40C to 125C, VCC = 12V (unless otherwise noted)
Symbol
Parameter
Condition
Min Typ Max Unit
VCC Supply Voltage
VCC Input Supply Voltage
ICC-NORM
ICC-LPM
ICC-SHUTDOWN
Quiescent current
Normal Mode
Quiescent current Low Power
PFM Mode
Quiescent current
Shutdown Mod
VCC Under Voltage Lockout
VCC-UV
VCC-UV_HYST
Input Supply Under Voltage
Threshold
Input Supply Under Voltage
Threshold Hysteresis
OSC
fOSC
PG Open Drain Output
Oscillator Frequency
2.0 5.5 V
VCC = 3.3Vn, ILLOPA=D3=.30VA, VEN=3.3V, 12 mA
VCC = 3.3V,nILLOAPD==0V0A, VEN=3.3V, 45 mA
VCC = 3.3V, EN=0V
0.1 uA
VCC Increasing
1.9 2.0
V
100 mV
2.0 2.25 2.5 MHz
tPG PG Release Timer
IOH-PG
High-Level Output Leakage
VOL-PG
Low-Level Output Voltage
EN/nLP Input Voltage Thresholds
VPG=5V VCC=5V
IPG = -0.3mA
10 ms
0.1 uA
0.01 V
VIH-EN/nLP
VIL-EN/nLP
VHYST-EN/nLP
IIN-EN
nLPPD
Thermal Shutdown
TSD
TSDHYST
High Level Input Voltage
Low Level Input Voltage
Input Hysteresis
EN Input Leakage
nLP Pulldown Resistor
Thermal Shutdown Junction
Temperature
TSD Hysteresis
VCC=2V to 5V
VCC=2V to 5V
VCC=2V to 5V
VEN=5V VCC=5V
VEN=0V VCC=5V
Pulldown to GND
1.0 V
0.4 V
100 mV
0.1 uA
0.1 uA
100 KΩ
150 170 190
10
C
C
TS33000
Final Datasheet
May 1, 2015
Rev 1.9
www.semtech.com
5 of 17
Semtech
5 Page 
Typical Performance Characteristics
TTTTSSSVS3VVVVVe333eeere3errrs33rr3issss0osiiii00oooino0o0nnnn00n100111.11009....0999.99
TJ = -40C to 125C, VCC = 12V (unless otherwise noted)
0000.002....222.52255555
0000.002....222.22
0000.001....111.51155555
0000.001....111.11
0000.00....000.50055555
000000222222
2222.225....555.55
33333I3nIIIInnnInpnppppup3uuuutu333u.3 ttt3
5 t V....t
555 .
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(e (
V
((( (V
(VVVV)V)4))))444.4)45....555.55
555555
Fig.11 Standby Current vs. Input Voltage
5555.55....555.55
333333......333333333333333333333333333332222333333.....3..................333333333333333......33333789012262222332223322233222222332......33333................333.....32223327812955555578901789017890122332233223366622278901223362.....3....78901223362781278127812999555555555555555555333781295555553.-781295555553‐5----‐‐‐0555‐-5‐500000
IOIIIIUOOOOITOUUUU=UTTTT1===T==01111m100000mmmmAmAAAAA
IOIIIIUOOOOITOUUUU=UTTTT3===T==0333303000m00000mmmmAmAAAAA
-‐2----‐‐‐5222‐-2‐255555
000000 TTeeTTTTmTmeeee2emmmm5p222mp22555pppe5pe5preeeeraerrrrataaarauatttttuuuurtu5eurrrrr0 555eee
re 5 e(5eo000
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( ooo (o°CCC)oCCC)))))) 757777755555
1011111000000000
Fig.13 Output Voltage vs. Temperature
121111152222255555
6666066000100111.151....555.55
666606600010011111
666606600000000.050....555.55
66660660000000000
555595599999999.959....555.55
55559559999999999
5555955999899888.858....555.55
55559559998998888-8‐5----‐‐‐555‐-05‐500000 -‐2----‐‐‐222‐-52‐255555
000000TTeeTTTTTeeemmeemmmm2mpp22252pppeep2555p5eeerre5eaarrrrraaattaauutttttuuurru5ueerrr5550r5reee5
e 000 ((0e 0o
°
((( (
CC ooo (ooCCC)C)C)))))777757755555
11110110000000000 111121122252255555
Fig.15 Oscillator Frequency vs. Temperature
0.00060...0.6666.6
0.00050...0.5555.5
0.00040...0.4444.4
0.00030...0.3333.3
0.00020...0.2222.2
0.00010...0.1111.1
0 000-0‐50---0-‐‐‐555‐5-‐000500
-‐2---5-‐‐‐222‐2-‐555255
0 00000 TeTe2TTTmTm5eeeTe2222mmmepm5552p5m5epppperpeeeearrrerrtaaaraautttatruuutueuurrr5r(eeeroe0r555(((eC5(ooo0005eo()0CCCoC0)))C)()°C)757777555755
10111100001000000
Fig.12 Standby Current vs. Temperature
121111522212555255
0000.00....0006.0066666
0000.00....0005.005555555555
0000.00....0005.0055555
0000.00....0004.0044454455555
0000.00....0004.0044444
0000.00....0003.0033353355555
0000.00....0003.0033333-‐5----‐‐‐555‐-05‐500000
-‐2----‐‐‐222‐-52‐255555
000000 TeTTTTTTeeemeeemmmm2mmp22252pppp2ep555p5eee5reeearrrrrraaaataauttttttuuuuru5uerrrr555r05ereee5
e 000 (0e 0o
(((( (
C ooo° (ooCCCC)CC))))))777757755555
11110110000000000
Fig.14 Quiescent Current vs. Temperature
111121122252255555
2222.232....3335.3355555
2222.232....333.33
2222.222....2225.2255555
2222.222....222.22
2222.212....1115.1155555
2222.212....111.11
2222.202....0005.0055555
222222
1111.191....9995.9F9555i5-5g‐5----.‐‐‐5550‐-15‐5000060Inp-‐u2----‐‐‐222‐5-t2‐25555C5urre0n0000t0vTsTeTTT.TeTTeeememeemmm2mpmm2225p2pppe2p5555pepeeer5eearerrrraraaatarautattttutuuurut5uerurrrr55505ereee
re 5 (000e0e o
0
((( ( ( C
ooo (°o(oCCC)CCNC)))))o)7l7775o775555a5d,
11110110000000000 111121122252255555
No switching)
TS33000
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www.semtech.com
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11 of 17
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11111111111
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet TS33000.PDF ] | |
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