Si9166

Voltages Referenced to GND
V_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 V
MODE, PWM/PSM, SYNC, SD, V_REF, R_OSC
COMP, FB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to V_DD + 0.3 V
V_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to V_S + 0.3 V
PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3 V
Voltages Referenced to PGND
V_S.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 V
DH, DL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to V_S + 0.3 V
Peak Output Current (DH, DL) . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to 150°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Power Dissipation (Package)a
16-Pin TSSOP (Q Suffix)b . . . . . . . . . . . . . . . . . . . . . . . . . . . 925 mW
Thermal Impedance (qJA)
16-Pin TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135°C/W
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 7.4 mW/°C above 25°C.

The Si9166 is a programmable topology controller for today's continuous changing portable electronic market. Si9166 provides flexibility of utilizing various battery configurations and chemistries such as NiCd, NiMhy, or Li+ with input voltage range of 2.7 V to 6 V. An additional flexibility is provided with topology programmability to power multiple loads such as power amplifiers, microcontrollers, or baseband logic IC's. The converters can be programmed to be synchronous Buck or Boost topology. For ultra-high efficiency, converters are designed to operate in synchronous rectified PWM mode under full load while transforming into externally controlled pulse skipping mode (PSM) under light load. All these features are provided by the Si9166 without sacrificing system integration requirements of fitting these circuits into ever demanding smaller and smaller space. The Si9166 is capable of switching up to 2 MHz to minimize the output inductor and capacitor size in order to decrease the overall converter size.

The Si9166 is available in TSSOP-16 pin package and specified to operate over the industrial temperature range of -25°C to 85°C.