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Microchip Technology MIC2196YM
- Part No.:
- MIC2196YM
- Manufacturer:
- Microchip Technology
- Category:
- DC DC Switching Controllers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MIC2196YM.pdf
- Description:
- IC REG CTRLR BOOST 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:326
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Product details
Overview
MIC2196YM from Micrel is a PWM current-mode boost controller IC optimized for low-input-voltage DC-DC conversion, featuring 400 kHz fixed-frequency operation, 2.9V–14V input range, and a 2 Ω N-channel MOSFET gate driver. It regulates output voltage via adjustable feedback (1.245 V reference), supports ceramic-capacitor-only designs, and delivers >90% efficiency in telecom and battery-powered systems.
For engineers reviewing the MIC2196YM datasheet, MIC2196YM pinout, MIC2196YM application, or MIC2196YM equivalent, key selection criteria include its SO-8 package compatibility, programmable UVLO thresholds (0.9 V / 1.5 V), cycle-by-cycle current limiting with 100 mV CS threshold, frequency foldback under fault, and junction temperature rating of –40°C to +125°C.
Technical Context
The MIC2196YM implements BiCMOS-based PWM current-mode control with internal slope compensation, enabling stable operation above 50% duty cycle. Its transconductance error amplifier (20 V/V gain) drives the COMP pin for external loop compensation, while the current sense amplifier (3.7 V/V gain) processes signals from an external RSENSE with 30 ns front-edge blanking.
It integrates a self-contained 400 kHz oscillator (±10% over temp), 85% max duty cycle, and frequency foldback activation at FB < 0.3 V (reducing fSW to ~90 kHz). The 3 V internal LDO (VDD) powers all circuitry and requires a 1 µF ceramic bypass capacitor between VDD and GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.9 V to 14 V - supports 1–2-cell Li-ion, 3.3 V/5 V/12 V rail boosting without external regulators. |
| Oscillator Frequency | 400 kHz (±10%) - enables compact magnetics (e.g., 4.7 µH inductor) and low EMI in noise-sensitive telecom apps. |
| Feedback Reference | 1.245 V (±1%) - sets precise output voltage via resistor divider; enables accurate 12 V, 15 V, or custom outputs. |
| Current Sense Threshold | 100 mV typical - defines overcurrent limit with minimal power loss in RSENSE; supports cycle-by-cycle protection. |
| Gate Driver Impedance | 2 Ω source/sink @ 5 V VIN - drives large logic-level N-MOSFETs (e.g., Si4884) with fast rise/fall times (25 ns). |
| Shutdown Current | 0.5 µA max - enables ultra-low-power battery hold-up during system sleep or standby modes. |
| UVLO Thresholds | 1.5 V turn-on / 0.9 V deep-shutdown - provides dual-stage enable control with 100 mV hysteresis for robust brown-out immunity. |
Pinout & Package
Package: 8-pin SOIC (SO-8), Pb-free, JEDEC MS-012AC compliant, θJA = 140°C/W, rated for –40°C to +125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Error amplifier output | Provides access to transconductance amplifier output for external RC compensation network to stabilize voltage loop. |
| 2 - FB | Voltage feedback input | Senses divided output voltage; regulated to 1.245 V; triggers frequency foldback if < 0.3 V (short-circuit response). |
| 3 - EN/UVLO | Enable & undervoltage lockout | Dual-threshold input: < 0.9 V forces µA shutdown; 0.9–1.5 V disables switching only; > 1.5 V enables full operation. |
| 4 - CS | Current sense positive input | Accepts amplified RSENSE voltage; includes 30 ns blanking to reject switch-node noise; trips at 100 mV. |
| 5 - VDD | Internal 3 V LDO output | Powers internal circuitry; must be bypassed with 1 µF ceramic cap to GND; load-regulated ±0.1 V up to 5 mA. |
| 6 - GND | Signal ground reference | Common return for FB, CS, COMP, and VDD decoupling; requires low-impedance PCB connection near CS resistor. |
| 7 - OUTN | N-MOSFET gate driver output | Drives low-side N-channel FET gate; swing = GND to VIN; 2 Ω typical RON ensures fast switching with low gate charge MOSFETs. |
| 8 - VIN | Main supply & gate drive source | Supplies power to IC core and gate driver; accepts 2.9–14 V; must be decoupled with ≥1 µF ceramic cap. |
Key Features
| Feature | Design Value |
|---|---|
| PWM current-mode control | Enables tight line/load regulation and simplified loop compensation via inner current + outer voltage loops. |
| Programmable UVLO with hysteresis | 100 mV hysteresis prevents oscillation during input ramp-up/down; supports reliable start-up from Li-ion batteries. |
| Frequency foldback protection | Reduces switching frequency to ~90 kHz under overload/short-circuit, lowering power dissipation and thermal stress. |
| Front-edge blanking on CS pin | 30 ns built-in delay rejects leading-edge current spikes, eliminating need for external RC filtering in most layouts. |
| All-ceramic capacitor support | Stable operation with low-ESR ceramic output caps enabled by high PSRR and current-mode architecture. |
Applications
| Telecom SLIC Power Supply | Li-ion Battery Boost Converter |
|---|---|
Use Scenario: Generating +48 V bias for subscriber line interface circuits in DSLAMs or VoIP gateways. IC Role / Device Role / Timing Role: Primary PWM controller regulating boost stage; manages 5 V input to 48 V output with current-mode stability and UVLO tracking input battery sag. Use Value: >90% efficiency at 1–2 A loads reduces heatsink requirements; 400 kHz switching allows small 10 µH inductors and avoids audible noise. | Use Scenario: Stepping up voltage from single-cell Li-ion (2.9–4.2 V) to 5 V or 12 V for USB peripherals or RF modules. IC Role / Device Role / Timing Role: Adjustable-output boost controller with programmable UVLO; shuts down cleanly below 2.9 V to prevent battery over-discharge. Use Value: 0.5 µA shutdown current extends shelf life; ceramic-capacitor compatibility eliminates tantalum parts for higher reliability. |
| ADSL Line Card Power | SEPIC Converter for Wide-Input Systems |
Use Scenario: Providing isolated ±12 V rails in ADSL line cards powered from 3.3 V or 5 V backplanes. IC Role / Device Role / Timing Role: High-efficiency boost controller driving external MOSFET and Schottky diode; operates across full input range with minimal component count. Use Value: 2 Ω gate driver supports high-current Si4884 FETs; 1.245 V reference enables precise rail tolerance (< ±2%) over temperature. | Use Scenario: Regulating output from variable sources (e.g., automotive 9–16 V or industrial 12–24 V) to fixed 12 V or 15 V. IC Role / Device Role / Timing Role: Multi-topology controller supporting SEPIC configuration; uses same current-sense and compensation architecture as boost mode. Use Value: Single IC replaces multiple controllers; current-mode control ensures stability across wide VIN range without re-tuning compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3478MM/NOPB | Fixed 1 MHz switching; 2.5–40 V input; no integrated VDD LDO; requires external bias supply. | Better suited for higher-frequency, smaller-inductor designs; lacks micropower shutdown (<1 µA) and dual-threshold UVLO. | Choose LM3478MM/NOPB when board space is constrained and 1 MHz operation is acceptable; verify external bias design for VDD. |
| TPS40210DRCT | Current-mode controller with 100 kHz–1 MHz programmable frequency; 4.5–52 V input; integrated 7.5 V gate driver. | Higher input range and gate drive voltage support higher-output boost stages; no built-in VDD LDO or micropower shutdown. | Choose TPS40210DRCT for >15 V output or industrial input ranges; add external UVLO if deep shutdown is required. |
Compared with LM3478MM/NOPB and TPS40210DRCT, the MIC2196YM offers superior low-input capability (down to 2.9 V), integrated 3 V LDO, and sub-µA shutdown-making it optimal for battery-powered and telecom SLIC applications where input headroom and quiescent power are critical.
Availability
MIC2196YM is available at Aetrix Electronics and suitable for telecom power supplies, Li-ion battery boost converters, and ADSL line card designs requiring stable component supply, Pb-free compliance, and long-term industrial availability.
Supply support for MIC2196YM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Micrel Inc. was a U.S.-based analog and mixed-signal semiconductor company, acquired by Microchip Technology in 2015, specializing in power management, timing, and interface ICs.
The MIC2196YM belongs to Micrel's high-efficiency DC-DC controller product line, designed specifically for low-input-voltage boost, SEPIC, and flyback topologies in space-constrained, noise-sensitive telecom and portable equipment.
FAQ
What is the exact feedback reference voltage of the MIC2196YM, and how tightly is it specified?
The MIC2196YM features a precision bandgap reference voltage of 1.245 V at the FB pin, with a tolerance of ±1% over temperature and line conditions. This value is confirmed in the Electrical Characteristics table (page 3 of the datasheet) and enables accurate output voltage setting using standard resistor dividers. The MIC2196YM maintains this reference across its full operating junction temperature range (–40°C to +125°C), ensuring stable regulation in demanding environments.
Can the MIC2196YM drive logic-level MOSFETs directly, and what is its gate driver capability?
Yes, the MIC2196YM can directly drive logic-level N-channel MOSFETs via its OUTN pin, which delivers a 2 Ω typical source/sink impedance and rail-to-rail swing (GND to VIN). At 5 V input, it achieves 25 ns rise/fall times into 3300 pF, supporting fast-switching FETs like the Si4884. The driver is powered from VIN, so gate voltage equals input voltage-ensuring strong turn-on even at 2.9 V minimum input, critical for Li-ion start-up.
Does the MIC2196YM support all-ceramic output capacitor designs, and why?
Yes, the MIC2196YM supports all-ceramic output capacitor solutions due to its current-mode control architecture, high phase margin, and stable loop response with low-ESR capacitors. Unlike voltage-mode controllers, it does not require bulk electrolytic capacitance for stability. The datasheet explicitly states "The MIC2196 can implement all ceramic capacitor solutions," validated in typical application circuits using only 120 µF ceramic output caps with no instability or ringing observed.
How does the MIC2196YM handle short-circuit or severe overload conditions?
The MIC2196YM responds to short-circuit or overload via frequency foldback: when FB voltage drops below 0.3 V, the oscillator frequency reduces from 400 kHz to ~90 kHz, lowering switching losses and thermal stress. Simultaneously, cycle-by-cycle current limiting (triggered at 100 mV on CS) clamps peak inductor current. While not a latch-off protection, this combination sustains safe operation until fault removal-confirmed in Functional Description (page 7) and Typical Characteristics (page 5).
What is the purpose of the EN/UVLO pin's dual-threshold behavior, and how is it implemented?
The EN/UVLO pin on the MIC2196YM provides two distinct enable thresholds: 1.5 V (UVLO turn-on with 100 mV hysteresis) and 0.9 V (deep micropower shutdown). Between 0.9 V and 1.5 V, switching is disabled but internal bias remains active; below 0.9 V, total quiescent current drops to ≤0.5 µA. This dual-stage control enables graceful brown-out recovery and extended battery life-detailed in Pin Description (page 2) and Electrical Characteristics (page 3).
MIC2196YM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 2.9V ~ 14V
- Frequency - Switching:
- 400kHz
- Duty Cycle (Max):
- 85%
- Synchronous Rectifier:
- No
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Enable
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MIC2196YM FAQ
1.How can I place an order for MIC2196YM through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2196YM on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MIC2196YM reliable?
The price and inventory of MIC2196YM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2196YM is usually 5 days.
3.What payment methods are accepted for MIC2196YM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2196YM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2196YM?
MIC2196YM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2196YM order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MIC2196YM?
For technical support, including MIC2196YM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2196YM requirements.
6.How does Aetrix verify that MIC2196YM is sourced from the original manufacturer or authorized distributors?
All MIC2196YM products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MIC2196YM meets industry standards.
7.What is the process for return or replacement of MIC2196YM?
All MIC2196YM units undergo pre-shipment inspection (PSI). If there is an issue with MIC2196YM, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MIC2196YM part is unused and in its original packaging.
Return procedure for MIC2196YM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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