MAX798 |
RFQ for MAX798 Required Field |
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| Technical/Catalog Information | MAX798ESE+ |
| Vendor | Maxim Integrated Products |
| Category | Integrated Circuits (ICs) |
| Type | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage - Input | 4.5 ~ 30 V |
| Voltage - Output | 1.6 ~ 6 V |
| Current - Output | 10A |
| Power - Output | 696mW |
| Package / Case | 16-SOIC (3.9mm Width) |
| Packaging | Tube |
| Internal Switch(s) | No |
| Synchronous | Yes |
| Rds (On) | 7 Ohm |
| Operating Temperature | -40°C ~ 85°C |
| Frequency - Switching | 150kHz, 300kHz |
| Drawing Number | 175; 21-0041; SE; 16 |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | MAX798ESE+ MAX798ESE+ |
| Product | Manufacturers | Pack | D/C |
| MAX798 | - | SOP | - |
The MAX798† high-performance, step-down DC-DC converter provides main CPU power in battery-powered systems. This buck controller achieves 96% efficiency by using synchronous rectification and Maxim's proprietary Idle Mode™ control scheme to extend battery life at full-load (up to 10A) and no-load outputs. The MAX798's high accuracy meets the demanding requirements of the latest-generation CPUs. Excellent dynamic response corrects output transients caused by the latest dynamic-clock CPUs within five 300kHz clock cycles. Unique bootstrap circuitry drives inexpensive N-channel MOSFETs, reducing system cost and eliminating the crowbar switching currents found in some PMOS/NMOS switch designs.
The MAX798 has a logic-controlled and synchronizable fixed-frequency pulse-width-modulating (PWM) operating mode, which reduces noise and RF interference in sensitive mobile-communications and pen-entry applications. The SKIP override input allows automatic switchover to idle-mode operation (for high-efficiency pulse skipping) at light loads, or forces fixed-frequency mode for lowest noise at all loads.
Typical Application |
Features |
| Notebook and Subnotebook Computers PDAs and Mobile Communicators | 96% Efficiency4.5V to 30V Input Range1.6V to 6V Adjustable Precision Output±0.4% Max Total Load-Regulation Error0.06%/V Max Line-Regulation Error5V Linear-Regulator OutputPrecision 2.505V Reference OutputAutomatic Bootstrap Circuit150kHz/300kHz Fixed-Frequency PWM OperationProgrammable Soft-Start1.2mA Typical Quiescent Current (VIN = 12V, VOUT = 2.5V)1A Typical Shutdown Current |
V+ to GND ....................................................................................-0.3V, +36V
GND to PGND............................................................................................±2V
VL to GND .......................................................................................-0.3V, +7V
BST to GND....................................................................................-0.3V, +36V
DH to LX ............................................................................-0.3V, (BST + 0.3V)
LX to BST.........................................................................................-7V, +0.3V
SHDN to GND.................................................................................-0.3V, +36V
SYNC, SS, REF, SKIP, DL to GND ...........................................-0.3V, (VL + 0.3V)
CSH, CSL to GND .............................................................................-0.3V, +7V
VL Short Circuit to GND....................................................................Momentary
REF Short Circuit to GND ................................................................Continuous
VL Output Current ...................................................................................50mA
Continuous Power Dissipation (TA = +70°C)
SO (derate 8.70mW/°C above +70°C)................................................696mW
Operating Temperature Range
MAX798ESE............................................................................-40°C to +85°C
Storage Temperature Range ...............................................-65°C to +160°C
Lead Temperature (soldering, 10sec) ..................................................+300°C
