Product Summary

The SI9136LG is a current-mode PWM and PSM converter controller, with two synchronous buck converters (3.3 V and 5 V) and a flyback (non-isolated buck-boost) converter (12 V). Designed for portable devices, the SI9136LG offers a total five power outputs (three tightly regulated dc/dc converter outputs, a precision 3.3-V reference and a 5-V LDO output). It requires minimum external components and is capable of achieving conversion efficiencies approaching 95%. The SI9136LG is available in a 28-pin SSOP package and specified to operate over the extended commercial temperature range.

Parametrics

SI9136LG absolute maximum ratings: (1)VIN to GND: –0.3 to +36 V; (2)PGND to GND: ±2 V; (3)VL to GND: –0.3 to +6.5 V; (4)BST3, BST5, BSTFY to GND: –0.3 V to +36 V; (5)VL Short to GND: Continuous; (6)LX3 to BST3; LX5 to BST5; LXFY to BST: –6.5 V to 0.3 V; (7)Inputs/Outputs to GND (CS3, CS5, CSP, CSN): –0.3 V to (VL +0.3 V); (8)5 ON/OFF, 3 ON/OFF, 12 ON/OFF: –0.3 V to +5.5 V; (9)DL3, DL5 to PGND: –0.3 V to (VL +0.3 V); (10)DLFY to PGND: Input of Flyback; (11)DH3 to LX3, DH5 to LX5, DHFY to LXFY: –0.3 V to (BSTX +0.3 V); (12)Continuous Power Dissipation 28-Pin SSOPb: 572 mW; (13)Operating Temperature Range: 0 ℃to 90℃; (14)Storage Temperature Range: –40℃ to 125℃; (15)Lead Temperature (Soldering, 10 Sec.): 300℃.

Features

SI9136LG features: (1)Up to 95% Efficiency; (2)3% Total Regulation (Each Controller); (3)5.5-V to 30-V Input Voltage Range; (4)3.3-V, 5-V, and 12-V Outputs; (5)200-kHz Low-Noise Fixed Frequency Operation; (6)Precision 3.3-V Reference Output; (7)30 mA Linear Regulator Output; (8)High Efficiency Pulse Skipping Mode Operation at Light Load; (9)Only Three Inductors Required No Transformer; (10)LITTLE FOOT Optimized Output Drivers; (11)Internal Soft-Start; (12)Minimal External Control Components; (13)28-Pin SSOP Package.

Diagrams

SI9136LG pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
SI9136LG
SI9136LG

Vishay/Siliconix

Current Mode PWM Controllers Power Sup Controller

Data Sheet

0-126: $4.30
126-250: $4.06
250-500: $3.82
500-1000: $3.46
SI9136LG-E3
SI9136LG-E3

Vishay/Siliconix

Current Mode PWM Controllers Multi-Out Pwr-Supply Controller

Data Sheet

0-1: $2.52
1-10: $2.40
10-25: $2.27
25-100: $2.15
SI9136LG-T1
SI9136LG-T1

Vishay/Siliconix

Current Mode PWM Controllers Multi-Out Pwr-Supply Controller

Data Sheet

0-1059: $4.06
1059-1800: $3.82
SI9136LG-T1-E3
SI9136LG-T1-E3


IC CTRLR PWM PIN PROG 28SSOP

Data Sheet

0-1800: $1.68