BETASelected packageTO-252TLV1117-33IKVURG3
800 mA fixed-output linear regulator
TLV1117-33 Reference Tables
Search the TLV1117-33 pin reference and manufacturer-referenced specification tables.
Physical connections3 pinsPackage-specific numbering
Reference collection7 tables38 parameters & pin functions
Pin reference
Signal names, electrical functions and connection guidance
Physical pin numbers3 pins
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| Pin | Signal | Type | Function & connection |
|---|---|---|---|
| GND | Ground reference | Reference and bias return for the fixed 3.3 V regulator.Connection guidanceJoin input return, capacitor returns and load ground locally. Lead 1. The tab is OUTPUT, not ground. | |
| OUT | Regulated output and tab | Fixed 3.3 V output; also connected to the large exposed tab.Connection guidanceConnect the load and output stability capacitor here. Lead 2 and exposed thermal tab are one electrical node. | |
| IN | Supply input | Input to the protected series-pass stage.Connection guidanceUse +5 V with local ceramic bypass in the illustrated circuit. Recommended 4.7–15 V for this output; allow dropout and ripple margin. |
No pins match these filters. Try another signal name or reset the filters.
Exact order and silicon revision
One verified fixed-3.3 V package
Manufacturer-referenced values6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Selected order | TLV1117-33IKVURG3 | TO-252 KVU; industrial junction range |
| Package marking | ZF33 | Manufacturer marking plus traceability data |
| Physical electrical nodes | 1 GND; 2 OUT/tab; 3 IN | Metal tab must not be grounded |
| Legacy chip identifier | CSO SFB | Use legacy limits and stability guidance |
| New chip identifiers | CSO RFB or FFAB | Use new fixed-output specifications |
| Through-hole option | Not offered on this page | No matching fixed-3.3 V through-hole order verified in the selected order table |
No specifications match. Try a parameter name or a unit.
Package illustrations show identity; use the shipment label to distinguish silicon.
Operating range and accuracy
Selected I-grade device
Manufacturer-referenced values8 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Recommended input | 4.7–15 V | Add ripple margin above worst-case dropout |
| Absolute maximum input | 16 V | Stress rating only |
| Output current | 0–800 mA | Limited by heat and source headroom |
| Recommended junction | −40 to 125°C | Not the ambient-temperature rating |
| Output at 25°C | 3.267–3.333 V | VIN5 V, 10 mA load |
| I-grade output over specified range | 3.168–3.432 V | VIN4.75–10 V; 0–800 mA; full temperature |
| I-grade line regulation | 1 mV typical; 10 mV maximum | VIN4.75–15 V, no load |
| I-grade load regulation | 1 mV typical; 15 mV maximum | VIN4.75 V; 0–800 mA |
No specifications match. Try a parameter name or a unit.
C-grade temperature and accuracy limits are not substituted.
Dropout: legacy versus new
I-grade limits; load matters
Manufacturer-referenced values6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Legacy at 100 mA | 1.1 V typical; 1.3 V maximum | Output dropout test |
| Legacy at 500 mA | 1.15 V typical; 1.35 V maximum | Output dropout test |
| Legacy at 800 mA | 1.2 V typical; 1.4 V maximum | Output dropout test |
| New fixed chip at 100 mA | 0.2 V typical; 0.4 V maximum | New-chip specification |
| New fixed chip at 500 mA | 0.5 V typical; 0.8 V maximum | New-chip specification |
| New fixed chip at 800 mA | 0.8 V typical; 1.2 V maximum | New-chip specification |
No specifications match. Try a parameter name or a unit.
The family operating input range still applies; dropout alone does not define the minimum permitted input.
Ground current and protection
Do not mix the silicon columns
Manufacturer-referenced values6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Legacy fixed-output ground current | 5 mA typical; 15 mA maximum | VIN≤15 V |
| New fixed no-load ground current | 65 µA typical; 110 µA maximum | VIN15 V; not a full-load bias specification |
| Legacy current limit | 0.8 A min.; 1.2 A typ.; 1.6 A max. | 5 V input/output differential, 25°C |
| New fixed current limit | 1.1 A typical; 1.6 A maximum | VOUT=90% nominal; specified input headroom |
| New fixed short-circuit current | 150–350 mA; 250 mA typical | Foldback protection; not useful output power |
| New fixed thermal shutdown | 180°C typical; reset 160°C typical | Protection values, far above normal operating limits |
No specifications match. Try a parameter name or a unit.
Keep the junction below 125°C in normal service.
Capacitors and revision selection
The diagram targets new fixed-output silicon
Manufacturer-referenced values6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Illustrated input bypass | 10 µF ceramic | Close to IN and GND; choose voltage rating and effective capacitance |
| Illustrated output capacitor | 1 µF effective ceramic | TI new-chip example uses 1 µF |
| New fixed-output ESR | 2–500 mΩ | Recommended operating condition |
| Ceramic dielectric | X7R or X5R | Account for tolerance, temperature and DC bias |
| Legacy output capacitor | At least 10 µF tantalum | Follow the legacy stability guidance, not the new-chip example |
| Long input wiring | Use local input capacitance | Especially when source impedance exceeds 0.5 Ω |
No specifications match. Try a parameter name or a unit.
A nominal capacitor value does not guarantee its effective value under applied voltage.
Board cooling and calculated load
TO-252 soldered directly to a PCB
Manufacturer-referenced values6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| New-chip KVU θJA | 67.2°C/W | TI reference-board thermal metric |
| Legacy KVU θJA | 50.9°C/W | Different silicon column and board-dependent metric |
| Example output load | 33 Ω →100 mA nominal | Load power 330 mW; use ≥1 W resistor |
| Example pass loss | (5−3.3)×0.1=170 mW | Add VIN×actual ground current |
| Full 800 mA pass loss at 5 V | 1.36 W | Before bias term; large heat rise in small copper areas |
| Approximate rise at 1.36 W | 91°C using 67.2°C/W | Board-dependent estimate, not a guaranteed temperature |
No specifications match. Try a parameter name or a unit.
The headline 800 mA rating is not a promise at arbitrary input voltage and ambient.
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